1 Department of General Surgery, NHS Lothian, Edinburgh, UK.
2 Hepatopancreatobiliary and Transplant Unit, Freeman Hospital, Newcastle upon Tyne, UK.
3 Department of Hepatobiliary and Pancreatic Surgery, King's College Hospital, London, UK.
4 Hepato-Biliary-Pancreatic Medicine Department, Cancer Institute Hospital of Japanese Foundation for Cancer Research, Tokyo, Japan.
5 Royal North Shore Hospital, Sydney, NSW, Australia.
6 Department of Anatomical Pathology, New South Wales Health Pathology, Royal North Shore Hospital, Sydney, NSW, Australia.
7 Cambridge Hepatobiliary and Pancreatic Surgery Unit, Addenbrooke's Hospital, Cambridge, UK.
8 Hepatobiliary and Pancreatic Surgery Unit, The Royal Free Hospital, London, UK.
9 Hepatobiliary and Pancreatic Surgery Unit, University Hospitals Birmingham NHS Foundation Trust, Queen Elizabeth Hospital Birmingham, Birmingham, UK.
10 Hepatobiliary and Pancreatic Surgery Unit, University Hospital Southampton, Southampton, UK.
11 Hepatobiliary and Pancreatic Surgery Unit, Leeds Teaching Hospitals NHS Trust, Leeds, UK.
12 Department of Hepatopancreatobiliary Surgery, East Lancashire Teaching Hospitals NHS Trust, Lancashire, UK.
13 Oxford Hepato-Pancreato-Biliary (HPB) surgical unit, Oxford University Hospitals NHS Foundation Trust, Oxford, UK.
14 Nottingham Hepato-Pancreatico-Biliary (HPB) Service, Nottingham University Hospitals NHS Foundation Trust, Nottingham, UK.
15 Department of Hepatobiliary and Pancreatic Surgery, University Hospitals Bristol and Weston NHS Foundation trust, Bristol, UK.
16 Gastrointestinal Unit, The Royal Marsden NHS Foundation Trust, London, UK.
17 Department of Clinical Surgery, University of Edinburgh, Edinburgh, UK.
18 Department of Gastrointestinal Surgery, Stavanger University Hospital, Stavanger, Norway.
19 Hepatopancreatobiliary Unit, University Hospitals Plymouth NHS Trust, Plymouth, UK.
20 Hepato-pancreatico-biliary/Upper Gastrointestinal Unit, North Shore Hospital, Auckland, New Zealand.
21 Pancreatico-Biliary Endoscopy and Endosonography Division, Pancreas Translational and Clinical Research Centre, San Raffaele Scientific Institute IRCCS, Vita-Salute San Raffaele University, Milan, Italy.
22 Department of Visceral, Transplant and Thoracic Surgery, Centre of Operative Medicine, Medical University of Innsbrusk, Innsbruck, Austria.
23 Leicester Hepatopancreatobiliary Unit, University Hospitals of Leicester NHS Trust, Leicester, UK.
24 Department of General and Vascular Surgery, Christchurch Hospital, Canterbury District Health Board, Christchurch, New Zealand.
25 Wolfson Wohl Cancer Research Centre, Research Institute of Cancer Sciences, University of Glasgow, Glasgow, UK.
26 Sydney Medical School, University of Sydney, Sydney, NSW, Australia.
27 Hepatopancreatobiliary and Transplant Unit, Freeman Hospital, Newcastle upon Tyne, UK. sanjay.pandanaboyana@ncl.ac.uk.