Varut Lohsiriwat, MD, PhD, Associate Professor, (E-mail: bolloon@hotmail.com) Department of Surgery, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand

Shu-You Peng, FRCS (Gen Surg), FRCS (Hon), MD, Professor, Surgeon, (zrwkpsy@163.com) General Surgery, The Second Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou 310009, Zhejiang Province, China

Marcio F Chedid, MD, PhD, Professor, Surgeon, Division of Gastrointestinal Surgery and Liver Transplantation, Hospital de Clínicas de Porto Alegre, Medical School of UFRGS, Porto Alegre 90035-903, Brazil

Karl-Heinrich Link, MD, Professor, Research Group Oncology of Gastrointestinal Tumors (FOGT), University of Ulm, Ulm 89081, Germany

Ying-Bin Liu, MD, Professor, Department of General Surgery, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai; Institute of Biliary Tract Disease, Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China

Mohamed Abdel-Wahab, MD, Professor, Gastrointestinal Surgery Department, Gastrointestinal Surgery Center, Mansoura University, Mansoura 35516, Egypt

Shefali Agrawal, MD, Associate Professor, Attending Doctor, Surgical Oncologist, Department of Surgical Oncology, Indraprastha Apollo Hospitals, New Delhi 110076, India

Nicholas Alexakis, MD, Associate Professor, Department of Surgery, Medical School, National Kapodistrian University of Athens, Athens 11527, Greece

Nayef Alzahrani, FRCS (Gen Surg), MD, Associate Professor, Surgical Oncology Unit, St George Hospital, Sydney 2217, Australia

Michele Ammendola, MD, Research Scientist, Department of Medical and Surgical Sciences, Clinical Surgery Unit, University of "Magna Graecia" Medical School, Catanzaro 88100, Italy

Stefano Andrianello, MD, Doctor, Surgeon, Department of General and Pancreatic Surgery, The Pancreas Institute, University of Verona Hospital Trust, Verona 37134, Italy

Hideki Aoki, MD, PhD, Chief Doctor, Surgeon, Department of Surgery, Iwakuni Clinical Center, Iwakuni 740-8510, Japan

Suefumi Aosasa, MD, PhD, Assistant Professor, Department of Surgery, National Defense Medical College, Tokorozawa 359-8513, Saitama, Japan

Giuseppe Aprile, MD, Doctor, Department Of Medical Oncology, University Hospital of Udine, Udine 33100, Italy

Raphael LC Araujo, MD, PhD, Doctor, Professor, Surgical Oncologist, Department of Upper Gastrointestinal and Hepato-Pancreato-Biliary Surgery, Barretos Cancer Hospital, Barretos 14.784-400, São Paulo, Brazil

Itamar Ashkenazi, N/A, Doctor, Hillel Yaffe Medical Center, Hillel Yaffe Medical Center, Hadera 38100, Israel

Wafi Attaallah, MD, Associate Professor, Department of General Surgery, Marmara University School of Medicine, Istanbul 34000, Turkey

Goran Augustin, MD, MSc, PhD, Assistant Professor, Doctor, Research Associate, Senior Scientist, Staff Physician, Surgeon, Department of Surgery, University Hospital Centre Zagreb, Zagreb 10000, Croatia

Shmuel Avital, MD, Chief Doctor, Professor, Department of Surgery B, University of Tel Aviv, the Sackler Faculty of Medicine, Kfar-Saba 4428164, Israel

Unal Aydin, MD, Professor, Department of General Surgery, Ege University, School of Medicine, Izmir TR-35100 , Turkey

Jeong-Heum Baek, MD, PhD, Professor, Department of Surgery, Gachon University Gil Medical Center, Incheon 21565, South Korea

Ahmet Ziya Balta, MD, Associate Professor, Lecturer, Surgeon, Department of Surgery, Health Sciences University, Abdulhamid Han Teaching and Research Hospital, Istanbul 34668, Turkey

Samik Kumar Bandyopadhyay, MD, Associate Professor, Department of Surgery, R.G.Kar Medical College, Kolkata 700 064, India

Matthias Biebl, MD, Professor, Department of General Surgery, Charite University Medicine, Berlin 13353, Germany

Vasile Virgil Bintintan, MD, PhD, Doctor, Senior Lecturer, Senior Researcher, Surgeon, Department of Surgery, “Iuliu Hatieganu” University of Medicine and Pharmacy Cluj-Napoca,, Cluj Napoca 400006, Romania

Fernando Martín Biscione, MD, MSc, Professor, Department of Infectious Diseases and Tropical Medicine Postgraduate Course, Medicine High School, Minas Gerais Federal University, Minas Gerais 30720-360, Brazil

Milos Bjelovic, MD, PhD, Full Professor, School of Medicine, University of Belgrade, Belgrade 11000, Serbia

Umberto Bracale, MD, PhD, Lecturer, Professor, Surgeon, Department of Gastroenterology, Endocrinology and Surgical Endoscopy, School of Medicine Federico II, Naples 80131, Campania, Italy

Riccardo Brachet Contul, MD, Adjunct Professor, Doctor, Surgeon, Department of General Surgery, Umberto Parini Regional Hospital, Aosta 11100, Aosta valley, Italy

J Bueno-Lledo, MD, PhD, Associate Professor, Chief Doctor, Doctor, Surgeon, Department of Surgery, Bueno-Lledo, J (reprint author), Calle Gabriel Miro 28,Puerta 12, ES-46008 Valencia, Spain., Valencia 46008, Spain

Ramón Cantero, PhD, Associate Professor, Surgeon, Department of Surgery, La Paz Universitary Hospital, Pozuelo de Alarcon 28223, Madrid, Spain

Damiano Caputo, MD, Academic Research, Assistant Professor, Research Assistant Professor, Surgeon, Department of General Surgery, University Campus Bio-Medico di Roma, Rome 00128, Italy

Diletta Cassini, MD, PhD, Associate Specialist, Surgeon, Department of General and Mini-invasive Surgery, Policlinico Abano Terme, Padova 35031, Italy

Valerio Celentano, FRCS (Gen Surg), MD, Senior Lecturer, Department of Colorectal Surgery, Department of Colorectal Surgery, Portsmouth Hospitals NHS Trust, Portsmouth , United Kingdom

Manuela Cesaretti, MD, PhD, Assistant Professor, Research Fellow, Surgeon, Department of HPB Surgery and Liver Transplantation; Department of Nanophysics, Italian Institute of Technology, Genova, Italy., Hôpital Beaujon, AP-HP, Clichy, France, Clichy 92110, France

Ying Chai, MD, Chief Doctor, Professor, Surgeon, Chair of Thoracic Surgery, Second Affiliated Hospital, Zhejiang University School of Medicine, Zhejiang University, Hangzhou 310009, Zhejiang Province, China

Mushtaq Chalkoo, MD, Associate Professor, Department of Surgery, Government Medical College, Srinagar 190014, India

Robert AFM Chamuleau, MD, PhD, Professor, Department of Hepatology, Academic Medical Center, University of Amsterdam, Amsterdam BK 1105, Netherlands

Kun-Ming Chan, MD, Associate Professor, Doctor, Senior Researcher, Surgeon, Department of Organs Transplantation Institute, Chang Gung University College of Medicine, Taoyun 33305, Taiwan

Lin Chen, MD, PhD, Chief Doctor, Professor, Department of General Surgey, Chinese People's Liberation Army General Hospital, Beijing 100853, China

Chien-Hung Chen, MD, PhD, Professor, Department of Internal Medicine, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei 100, Taiwan

Tan To Cheung, FRSC, Associate Professor, Department of Surgery, Queen Mary Hospital, The University of Hong Kong, Hong Kong N/A, China

Min Hoe Chew, FRCS (Ed), FRCS (Gen Surg), MBBS, Associate Professor, Senior Lecturer, Surgeon, Department of General Surgery, Sengkang General Hospital, Singapore 159964, Singapore

Adrian Kah Heng Chiow, FRCS (Gen Surg), Assistant Professor, Doctor, Senior Lecturer, Surgeon, Hepatopancreatobiliary Unit, Department of Surgery, Changi General Hospital, Singapore 529889, Singapore

Chang In Choi, MD, Assistant Professor, Department of Surgery, Biomedical Research Institute, Pusan National University Hospital, Busan 49241, South Korea

Stefano Crippa, MD, Research Fellow, Department of Surgery, University of Verona, Vimercate I-20059, Italy

Bobby VM Dasari, FRCS (Gen Surg), Surgeon, Department of Hepatobiliary and Pancreatic Surgery, Queen Elizabeth Hospital, Birmingham , United Kingdom

Eelco de Bree, MD, PhD, Associate Professor, Department of Surgical Oncology, Medical School of Crete University Hospital, Heraklion 71110, Greece

Fernando de la Portilla, PhD, Assistant Professor, Doctor, Professor, Coloproctology Unit, University Hospital Virgen del Rocio, Seville 41807, Spain

Paolo Del Rio, MD, Associate Professor, Department of Surgical Science, University of Parma-Italy, Parma 43123, Italy