Department of Surgery, Eastern Carolina University, Greenville, NC, USA

Westchester Medical Center, New York Medical College, Valhalla, NY, USA

Department of Surgery, Sant'Eugenio Hospital, Rome, Italy

University of Bonn, Bonn, Germany

Department of Gastrointestinal Surgery, IRCCS San Raffaele Scientific Institute, 20132 Milan, Italy School of Medicine, Vita-Salute San Raffaele University, 20132 Milan, Italy

Section for Surgical Research, Department of Surgery, Medical University of Graz, Graz, Austria

South East Queensland Surgery (SEQS) and Sunnybank Obesity Centre (SOC), McCullough Centre, Sunnybank, Queensland, Australia

General and Digestive Surgery Unit, Hospital de la Santa Creu i Sant Pau, Universidad Autónoma de Barcelona, Barcelona, Spain

Department of Hepatopancreatobiliary and Transplant Surgery, Singapore General Hospital, Duke - NUS Medical School Singapore, Singapore

Hepatopancreatobiliary/General Surgery, Department of Surgery, Changi General Hospital, Singapore

Department of Surgery, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China

Department of Surgery, NYU Langone, New York, NY, USA

Division Chief Colorectal Surgery, Department of Surgery Baylor University Medical Center, Dallas, TX, USA.

Westchester Medical Center, New York Medical College, Valhalla, NY, USA

University of Verona, Verona, Italy

Department of Surgery, Escola Paulista de Medicina, Federal University of Sao Paulo, Sao Paulo, Brazil

Peter MacCallum Cancer Centre, Epworth Healthcare and Alfred Hospitals, Melbourne, Australia

University of California Irvine, Irvine, CA, USA

Division of Gastroenterology and Hepatology, Mayo Clinic Arizona, USA

Department of Surgery, Division of General Surgery, University Hospitals Cleveland Medical Center, Cleveland, OH, USA

Departent of Gastrointestinal Surgery, Yeditepe University, Istanbul, Turkey

Department of Surgery, Gastroenterological Center, Yokohama City University, Yokohama, Japan

Min-Sheng General Hospital, Taoyuan

Department of Hepatopancreatobiliary and Transplant Surgery, Singapore General Hospital, Duke - NUS Medical School Singapore, Singapore

Department of Minimally Invasive Surgery, Baylor University Medical Center, Dallas, TX, USA

University of Bonn, Bonn, Germany

National University Health System, Minimally Invasive Center, Yong Loo Lin School of Medicine, National University Hospital, Singapore

Department of Surgery, University Hospitals Cleveland Medical Center, Cleveland, OH, USA

University of Naples Federico II, Naples, Italy

Department of Anorectal Physiology, Policlínica Geral do Rio de Janeiro, Rio de Janeiro, Brazil

Istinye University, School of Medicine, Department of Surgery, Istanbul, Turkey

Department of Surgery and Oncology, Unit of General and Hepatobiliary Surgery, Verona University Hospital Trust, Verona, Italy

University at Buffalo, Department of Surgery, Buffalo NY, USA

ASST Valle Olona, Gallarate, Varese, Italy

Division of General Surgery, Santa Scolatisca Hospital, Cassino, Lazio, Italy

University at Buffalo, Department of Surgery, Buffalo NY, USA

Max Institute of Minimal Access, Metabolic & Bariatric Surgery, Max Healthcare, Saket, New Delhi, India

Department of Urology, University of Rochester of Medical Center, Rochester, NY, USA

University of California Irvine, Irvine, CA, USA

Institutesdes Hôpitaux Universitaires (IHU) of the University of Strasbourg, Strasbourg, France

General and Digestive Surgery Unit, Hospital de la Santa Creu i Sant Pau, Universidad Autónoma de Barcelona, Barcelona, Spain

Department of Colorectal Surgery, Digestive Diseases and Surgery Institute, Cleveland Clinic Florida, Stuart, FL, USA

Peter MacCallum Cancer Centre, Epworth Healthcare and Alfred Hospitals, Melbourne, Australia

Department of Colorectal Surgery, Digestive Disease Institute, Cleveland Clinic Florida, Weston, FL, USA

Department of Surgery, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China