[1] Univ Vita Salute San Raffaele, San Raffaele Sci Inst, Pancreas Translat & Clin Res Ctr, Pancreat Surg Unit, Via Olgettina 60, IT-20132 Milan, Italy
[2] Philipps Univ Marburg, Dept Visceral Thorac & Vasc Surg, Marburg, Germany
[3] Vall dHebron Univ Hosp, Teknon Inst Oncol, Barcelona, Spain
[4] Chinese Acad Med Sci, Peking Union Med Coll Hosp, Beijing, Peoples R China
[5] Copenhagen Univ Hosp, Rigshosp, Neuroendocrine Tumor Ctr Excellence, Copenhagen, Denmark
[6] Med Univ Vienna, Dept Surg, Vienna, Austria
[7] Acad Med Ctr, Dept Surg, Amsterdam, Netherlands
[8] Charite Univ Med Berlin, Campus Virchow Klinikum, Dept Hepatol & Gastroenterol, Berlin, Germany
[9] Charite Univ Med Berlin, Dept Surg, Berlin, Germany
[10] Hampshire Hosp NHS Trust, Gastroenterol Dept, Basingstoke, Hants, England
[11] Gartnavel Royal Hosp, Beatson Oncol Ctr, Glasgow, Lanark, Scotland
[12] Beaujon Hosp, Dept Gastroenterol, Clichy, France
[13] Gustave Roussy Canc Campus, Serv Pathol Morphol & Mol, Dept Biol & Pathol Med, Villejuif, France
[14] Royal Free Hosp, Neuroendocrine Tumour Unit, London, England
[15] Hosp Robert Debre, Dept Digest & Endocrine Surg, Reims, France