In 2026, HBSN reviewers continue to make outstanding contributions to the peer review process. They demonstrated professional effort and enthusiasm in their reviews and provided comments that genuinely help the authors to enhance their work.
Hereby, we would like to highlight some of our outstanding reviewers, with a brief interview of their thoughts and insights as a reviewer. Allow us to express our heartfelt gratitude for their tremendous effort and valuable contributions to the scientific process.
Jongman Kim, Samsung Medical Center, South Korea
Vera Hartman, Antwerp University Hospital, Belgium
Seoung Hoon Kim, National Cancer Center, Korea
Francesco Guerra, AUSL Toscana Sud-Est, Grosseto, Italy
Radoslava Stoyanova, Barmherzige Schwestern Krankenhaus Wien, Austria
José Manuel Ramia-Angel, Hospital General Universitario Dr. Balmis, Spain
Masanori Fukushima, Nagasaki University, Japan
Alexander S. Thomas, Medical University of South Carolina, USA
Jongman Kim
Dr. Jongman Kim received his MD from Korea University in 2000 and completed his surgical training at Korea University Medical Center in 2005. From 2008 to 2011, he worked as a fellow in the Transplantation Division, Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine (Seoul, Korea), where he studied solid organ transplantation and hepatocellular carcinoma (HCC). He then obtained his Ph.D. from Korea University in 2009, with a dissertation on 4-1BB antibody‑based cancer immunotherapy. Since then, he has continued his career as a professor in the Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine until now (2026). In addition, Dr. Kim has operated on laparoscopic liver resection in liver malignancy and living liver donors, and has studied on HCC hepatectomy patients. He has operated on living or deceased donor for liver transplantation. His research focuses are mainly on minimal invasive surgical techniques, surgical techniques of liver transplantation, ABO-incompatibility, HCC, and immunosuppression in liver transplantation. He has performed many prospective clinical trials and international multicenter registration studies and has thus published many papers, with approximately 400 articles related to liver transplantation and/or HCC in the Journal of Hepatology, Hepatology, Annals of Surgery, British Journal of Surgery, Liver Transplantation, Hepatobiliary Surgery and Nutrition, and Transplantation.
HBSN: What do you regard as a healthy peer‑review system?
Dr. Kim: The core of a healthy review system lies in mutual growth through dialogue between researchers and reviewers. Rather than simply “accepting” or “rejecting,” it is crucial to provide specific, actionable feedback that enables authors to advance their research further. Reviewers, in turn, can grow by engaging with researchers’ perspectives. Speed and fairness are also vital. However, because reviewers themselves have extensive experience as researchers, deciding to reject a manuscript is an extremely difficult choice. Even when researchers receive a rejection, I hope they will use the reviewer’s meticulous feedback to produce even more outstanding research.
HBSN: Biases are inevitable in peer review. How do you minimize any potential biases during review?
Dr. Kim: I believe bias inevitably creeps into human minds and evaluations. To counter this, I consciously avoid looking at the authors’ affiliations and always start by reading the abstract and main text first, striving to focus solely on the research content. I constantly ask myself, “Is the standard I’m using objective? Is it based on sufficient evidence?” Finally, when a paper’s conclusion completely contradicts my existing beliefs, I re‑evaluate the research findings to verify whether the results were properly derived. I strive to eliminate emotional reactions as much as possible and make rational judgments.
HBSN: Would you like to say a few words to encourage other reviewers who have been devoting themselves to advancing scientific progress behind the scene?
Dr. Kim: I deeply respect my fellow reviewers who quietly contribute to scientific progress through the unseen process of peer review. Though their names may not appear in the paper, the time and advice they invest in reviewing are pillars that uphold science’s credibility. Their meticulous critiques provide invaluable lessons to researchers and lead to stronger papers. While the review process can sometimes be exhausting and cumbersome, I believe these steps collectively make the research environment more transparent and constructive for everyone. I would be grateful if we could all continue to be quiet companions in fostering a healthy scientific culture.
(by Ziv Zhang, Masaki Lo)
Vera Hartman
Dr. Vera Hartman is a pancreatic and transplant surgeon at Antwerp University Hospital and a PhD candidate focusing on exocrine pancreatic insufficiency following pancreatic surgery. She obtained her medical degree and completed her surgical training at the University of Antwerp, and has been a staff member in Hepatopancreatobiliary, Endocrine and Transplant surgery at Antwerp University Hospital since 2015. Her research is primarily dedicated to pancreatic surgery, with particular emphasis on postoperative pancreatic function, including the diagnosis and management of exocrine insufficiency, as well as minimally invasive and robotic surgical techniques. She is actively involved in several international collaborative research initiatives and has contributed to numerous peer-reviewed publications in the fields of pancreatic surgery and surgical oncology. Dr. Hartman holds memberships in multiple national and international scientific societies and participates in advisory and program committees, reflecting her ongoing commitment to advancing research and clinical practice in pancreatic surgery. Connect with her on LinkedIn.
Dr. Hartman emphasizes that peer review is essential to ensure the quality, validity, and scientific integrity of research. It acts as a filter, ensuring that only research meeting accepted scientific and ethical standards enters the literature, thereby maintaining trust in published evidence and supporting evidence-based practice.
In Dr. Hartman’s opinion, there will always be some form of bias in peer review, especially confirmation bias. She believes it is the reviewer’s job to be aware of this and try to avoid it. In her opinion, reviews should always be blinded.
Dr. Hartman notes that institutional review board (IRB) approval is crucial to ensure that research involving human participants is conducted ethically, with respect for autonomy, beneficence, and justice. It safeguards participants by evaluating risks, ensuring informed consent, and protecting privacy and confidentiality. She further explains that if IRB approval is omitted, the study may violate ethical and legal standards, potentially causing harm to participants, and undermining its scientific value.
(by Lynette Wan, Brad Li)
Seoung Hoon Kim
Seoung Hoon Kim graduated from Seoul National University College of Medicine in 1996 and earned his PhD there in 2006. After surgical residency and fellowship at Seoul National University Hospital, he joined the National Cancer Center, Korea, in 2003, where he serves as Director of the Organ Transplantation Center and Senior Researcher. He specialises in hepatobiliary and pancreatic surgery, focusing on liver transplantation and hepatectomy for hepatocellular carcinoma, cholangiocarcinoma, and metastatic liver disease. His work also aims to improve outcomes for both donors and recipients, performing the full spectrum of living donor liver transplantation, including donor and recipient surgery and microsurgical anastomosis. He has authored over 70 peer-reviewed publications. With more than 20 years of experience, he has performed over 800 living donor liver transplants and 2,000 liver resections. His research addresses advanced surgical techniques and the safe expansion of donor criteria, including ABO-incompatible transplantation and marginal living donors.
HBSN: What do you regard as a healthy peer-review system?
Dr. Kim: A healthy peer-review system is one that protects both scientific integrity and scientific curiosity. It should be rigorous enough to filter out flawed conclusions, yet open enough to allow new ideas to develop. In my view, peer review is not merely about rejection or acceptance—it is about improving the work. A strong system fosters constructive dialogue, even if anonymous, where reviewers act not as gatekeepers but as responsible colleagues who help refine the science. Such a system should also be fair, consistent, and timely, ensuring that all submissions are evaluated by the same standards while providing authors with clear, constructive feedback.
HBSN: Biases are inevitable in peer review. How do you minimize any potential biases during review?
Dr. Kim: I actively minimise potential biases by focusing on the scientific core of the manuscript—its data, methodology, and the validity of its conclusions—rather than the authors or their affiliations. I apply consistent and structured standards across all submissions. I also balance novelty and validity: a study may be methodologically sound yet lack meaningful impact, while highly novel work may be limited by insufficient methodological rigour. In my view, a manuscript should demonstrate both scientific validity and a clear contribution to the field to merit acceptance.
HBSN: Would you like to say a few words to encourage other reviewers who have been devoting themselves to advancing scientific progress behind the scenes?
Dr. Kim: Peer review is often invisible work, but it quietly shapes the direction of science. Every thoughtful comment can prevent errors, strengthen evidence, and ultimately improve patient care. Even though reviewers rarely receive recognition, their influence is real and lasting. I believe careful and honest reviews are a form of academic responsibility—and in many ways, a contribution as meaningful as authorship itself.
(by Lynette Wan, Brad Li)
Francesco Guerra
Dr. Francesco Guerra, MD, is a consultant general and gastrointestinal surgeon at the Department of General Surgery, AUSL Toscana Sud-Est, Grosseto, Italy. His clinical and academic activity focuses on minimally invasive oncologic surgery of the gastrointestinal tract and hepatopancreatobiliary (HPB) surgery, with particular interest in robotic and advanced laparoscopic techniques. His research is primarily dedicated to the development and standardization of innovative minimally invasive surgical strategies aimed at improving oncologic outcomes while enhancing surgical precision and postoperative recovery. He actively collaborates in international research initiatives and contributes regularly to peer-reviewed surgical literature and major scientific meetings. Dr. Guerra is strongly involved in surgical education and advanced training. He serves as faculty member of the International School of Robotic Surgery in Grosseto and regularly participates in advanced surgical training programs, including cadaveric and animal model courses for minimally invasive and robotic surgery. He also serves on the editorial board of several surgical journals focused on laparoscopic and robotic surgery. Visit Dr. Guerra’s ORCID, ResearchGate and LinkedIn for more information.
Dr. Guerra outlines the qualities a reviewer should possess, combining subject expertise with intellectual integrity and a constructive attitude. He emphasizes that the goal of peer review is not only to evaluate a manuscript but also to help improve its clarity, methodological rigor, and clinical relevance. In his view, objectivity, fairness, and the ability to distinguish major scientific issues from minor points are essential. Timeliness is also important, as an efficient peer-review process supports the quality and credibility of scientific publishing.
Dr. Guerra notes that reviewers should keep in mind not only the methodological quality of the study, but also the rationale behind it and the actual contribution it adds to the existing evidence. A well-conducted study is important, but it should also address a relevant clinical question and provide new or useful insights for the field. Peer review should therefore focus on whether the research is sound, clearly presented, and capable of advancing current knowledge.
From a reviewer’s perspective, Dr. Guerra considers it important for authors to follow reporting guidelines such as STROBE, CONSORT, PRISMA, and CARE during preparation of their manuscripts. To him, reporting guidelines are extremely valuable, as they promote transparency, completeness, and methodological clarity in scientific reporting. For reviewers, they provide a structured framework to assess study design and reporting quality; for readers, they improve the reliability and interpretability of the results. At the same time, he adds that a certain degree of flexibility is necessary during the review process, since not every type of scientific contribution fits perfectly within a specific guideline. Each manuscript should therefore be assessed in relation to its design, scope, and the type of evidence it aims to provide.
(by Lynette Wan, Brad Li)
Radoslava Stoyanova
Dr. Radoslava Petkova Stoyanova, MD, is a consultant surgeon at Barmherzige Schwestern Krankenhaus Wien in Vienna, Austria, and the head of the HPB (hepatopancreatobiliary) outpatient clinic at the hospital. She completed her fellowship in the HPB and transplant division at a Military Medical Hospital in Sofia, Bulgaria. She received the European Diploma in oncological treatment of HPB cancers in 2023 and has been a certified surgeon for the Da Vinci Xi System since 2022, having performed over 400 robotic operations. Her research focuses on HPB malignancies and minimally invasive treatment options, including robotic surgery, the implementation of fluorescent imaging in robotic HPB resections, and enhanced recovery after surgery. She is an active member of several international societies, serves as a reviewer for leading surgical and oncology journals, and regularly participates in national and international conferences. She has authored articles on minimally invasive treatment of choledocholithiasis, liver venous deprivation to increase the future liver remnant, and enhanced recovery after liver surgery. Learn more about her here.
HBSN: Biases are inevitable in peer review. How do you minimize any potential biases during review?
Dr. Stoyanova: For me, the quality of the article and the ideas presented are most important. I follow a structured guideline for each review, applying the same steps regardless of the author, institution, gender, concept, or previous revision history.
HBSN: Is there any interesting story during review that you would like to share with us?
Dr. Stoyanova: Reviewing articles is enjoyable for me, and I often do it alongside my clinical duties, for example after surgeries or even on vacation. Once, while on holiday in Italy, I reviewed an interesting article about a Dieulafoy’s lesion. After finishing, I realized the article was also authored in Italy. Nevertheless, reading and discussing the work of colleagues is always refreshing and intellectually stimulating.
HBSN: Data sharing is prevalent in scientific writing in recent years. Do you think it is crucial for authors to share their research data?
Dr. Stoyanova: Today, data sharing promotes transparency in scientific findings and can increase citations. I believe it is very important, as it enhances the overall quality of scientific work. Potential drawbacks, such as misinterpretation, ethical constraints, or fear of being scooped, should be actively discussed within the scientific community to develop effective solutions.
(by Lareina Lim, Brad Li)
José Manuel Ramia-Angel
Dr. José Manuel Ramia-Angel is a Professor of Surgery at Miguel Hernández University and Head of the Department of Surgery at Hospital General Universitario Dr. Balmis (Alicante, Spain). He specializes in hepatopancreatobiliary surgery and liver transplantation and actively engages in clinical research and surgical education. He has authored more than 350 PubMed-indexed publications and has extensive experience in the peer-review process, having completed over 600 reviews for indexed international journals. His reviewing activity spans a wide range of surgical research topics, with a focus on methodological rigor, clinical relevance, and clarity of reporting. He is dedicated to upholding high standards in scientific publishing and actively participates in the peer-review process as a vital part of academic practice. Learn more about him here.
Dr. Ramia-Angel believes that the current peer-review system remains vital for maintaining scientific quality; however, it faces several challenges, including inconsistent review standards, potential bias, limited transparency, and increasing reviewer workload. The rise in submissions can also reduce the depth and speed of reviews. Improvements should aim to boost transparency, adopt standardized evaluation criteria, and offer formal training in peer review. Moreover, greater institutional and academic recognition of reviewers’ contributions is needed to keep reviewers engaged and ensure the system's sustainability while upholding scientific rigor.
In Dr. Ramia-Angel’s opinion, a reviewer must demonstrate strong expertise in the field, critical appraisal skills, and a high level of objectivity. The ability to evaluate methodological validity, clinical relevance, and originality is essential. Additionally, reviewers should provide clear, structured, and constructive feedback to enhance the manuscript's quality. Comments should always be respectful and professional, maintaining a courteous tone regardless of the recommendation. In this regard, the reviewer should also take on a mentoring role, helping authors refine their work and guiding them toward higher scientific and reporting standards. Upholding professional integrity, confidentiality, and a strong commitment to scientific quality are fundamental to the peer-review process.
“Peer reviewing is a vital part of academic responsibility and is essential for maintaining the quality and reliability of scientific literature. Having conducted numerous reviews over the years, I see it as an integral part of my academic work. My motivation mainly comes from wanting to contribute to the progress of the field, help authors improve their work, and ensure that published research meets scientific and clinical standards. Additionally, the process is intellectually rewarding because it offers ongoing learning opportunities through exposure to new ideas, methodologies, and emerging evidence from other researchers’ work,” says Dr. Ramia-Angel.
(by Lareina Lim, Brad Li)
Masanori Fukushima
Masanori Fukushima, MD, PhD, graduated from Nagasaki University School of Medicine in 2008 and earned his doctoral degree at the same institution. From 2016 to 2018, he worked as a research fellow at the Mayo Clinic (USA), where he was involved in translational research. He is currently serving as an Assistant Professor in the Department of Gastroenterology and Hepatology at Nagasaki University Graduate School of Biomedical Sciences. His clinical specialty is liver disease, and his research focuses on liver fibrosis, metabolic dysfunction-associated steatotic liver disease (MASLD), and complications of liver cirrhosis.
Dr. Fukushima reckons that a healthy peer-review system requires evaluation by experts with sufficient domain knowledge, as a detailed understanding of the content is essential for appropriate assessment. However, in highly specialized fields and in systems that rely largely on voluntary contributions, there is a risk of over-reliance on a limited number of reviewers, which may lead to bias. To ensure a broader and more sustainable reviewer base, recent efforts to introduce incentives and formal recognition for reviewers are encouraging, although further improvements are still needed. In addition, with the increasing complexity of modern analytical methods, it can sometimes be difficult to determine whether the analyses are appropriate. While clinical experts can assess the medical relevance, there are situations in which the involvement of statistical experts may be necessary, and a system that allows for such consultation could further strengthen the review process.
According to Dr. Fukushima, novelty is an important consideration. In clinical research, he particularly focuses on whether the findings have meaningful implications for clinical practice and whether publication adds value to the field. At the same time, scientific validity and methodological rigor are essential. He also tries to provide constructive feedback rather than merely critical comments, with the goal of helping authors improve the quality of their work.
“I tend to accept review requests when the manuscript aligns with my area of expertise and presents interesting content. I also make an effort to review for journals to which I have previously submitted, as a way of contributing back to the academic community. In addition, the peer-review process provides valuable learning opportunities and allows me to stay updated with the latest developments in my field,” says Dr. Fukushima.
(by Lareina Lim, Brad Li)
Alexander S. Thomas
Dr. Alexander S. Thomas is a surgical oncologist specializing in hepatopancreatobiliary (HPB) surgery. He completed his general surgery residency and postdoctoral research fellowship at Columbia University Irving Medical Center, followed by fellowships in Complex General Surgical Oncology and HPB surgery at the University of Pittsburgh Medical Center. His clinical and academic focus centers on liver and pancreatic malignancies, with a keen interest in robotic surgery and multidisciplinary cancer care. In 2026, he will join the Medical University of South Carolina as an Assistant Professor of Surgery. Dr. Thomas’s research aims to optimize the management of advanced HPB malignancies by refining surgical decision-making, improving perioperative outcomes, and contributing to consensus guidelines for complex oncologic scenarios. His recent work also includes investigations into tumor biology and patient-reported outcomes following hepatobiliary surgery. Learn more about him here.
HBSN: What do you regard as a healthy peer-review system?
Dr. Thomas: A healthy peer-review system strikes a thoughtful balance between rigorous quality control and respect for the effort invested by authors. At its core, peer review should ensure the validity, clarity, and clinical relevance of submitted work, thereby maintaining trust in the scientific literature. At the same time, it should avoid imposing excessive revisions that do not meaningfully improve the manuscript. An effective system also recognizes reviewers as objective contributors to the publication process—individuals who not only evaluate scientific rigor, but also help refine manuscripts, identify gaps in the literature, and highlight work that advances the field. Ultimately, a healthy peer-review system is one that is constructive, efficient, and focused on elevating high-quality science rather than creating barriers to dissemination.
HBSN: What reviewers have to bear in mind while reviewing papers?
Dr. Thomas: Reviewers should approach each manuscript with humility, recognizing the expertise and effort behind the work. Their primary responsibility is to ensure scientific validity, but they should also look for opportunities to improve clarity and context. Importantly, reviewers should reserve critiques for changes that meaningfully strengthen the manuscript—balancing a duty to screen for flaws with a duty to authors to “look for reasons to publish.” Timeliness and professionalism are critical, as reviewers play a key role in ensuring an efficient and fair publication process.
HBSN: Would you like to say a few words to encourage other reviewers who have been devoting themselves to advancing scientific progress behind the scene?
Dr. Thomas: Peer review is often an invisible behind-the-scenes effort, yet it plays an indispensable role in advancing our field. For me, it has been one of the most effective ways to stay current with emerging literature while sharpening my ability to critically appraise and apply evidence in clinical practice. It has also strengthened my own research by helping me identify meaningful questions and design more rigorous studies. Reviewers serve as stewards of the scientific process—preserving trust in the literature while facilitating the efficient dissemination of high-quality work. I would encourage fellow reviewers to view this role not as a burden, but as a valuable opportunity to grow as a clinician and an academic contributor, and to contribute directly to the collective progress of our discipline.
(by Lareina Lim, Brad Li)
