Department of Medical-Surgical Sciences and Translational Medicine, Sapienza University of Rome, Digestive Disease Unit, ENETS Center of Excellence, Sant’Andrea University Hospital, Rome, Italy

Francesco Panzuto, Maria Rinzivillo & Elisabetta Dell’Unto

Pancreatic Surgery Unit, Pancreas Translational and Clinical Research Center, ENETS Center of Excellence, IRCCS San Raffaele Hospital, Vita-Salute San Raffaele University, Milan, Italy

Stefano Partelli & Massimo Falconi

Department of Medical and Surgical Sciences (DIMEC), Alma Mater Studiorum - University of Bologna, Medical Oncology Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy

Davide Campana & Giuseppe Lamberti

Department of Medical Oncology, Fondazione IRCCS Istituto Nazionale Dei Tumori Di Milano, ENETS Center of Excellence, Milan, Italy

Filippo de Braud & Sara Pusceddu

Gastrointestinal and Neuroendocrine Tumors Oncology Unit - ENETS Center of Excellence, European Institute of Oncology (IEO) - IRCCS, Milan, Italy

Francesca Spada & Nicola Fazio

Dipartimento Interdisciplinare di Medicina, Università di Bari “Aldo Moro”, Bari, Italy

Mauro Cives & Eleonora Lauricella

S.C. Sarcomi e Tumori Rari, Istituto Nazionale Tumori, I.R.C.C.S. - Fondazione “G. Pascale”, ENETS Center of Excellence, Napoli, Italy

Salvatore Tafuto

Sezione Sarcomi/NET e Oncologia del Giovane Adulto (AYA-Adolescent Young Adult) Humanitas Research Hospital-IRCCS Via Manzoni 56, 20089, Rozzano, Milan, Italy

Alexia Bertuzzi

Department of Oncology and Hematology, Division of Oncology, University Hospital of Modena, Modena, Italy

Fabio Gelsomino

Oncology 1, Veneto Institute of Oncology - IRCCS, Padua, Italy

Francesca Bergamo

Department of Surgery & Hepato-Biliary and Pancreatic Unit Santa Chiara Hospital, Azienda Provinciale per i Servizi Sanitari (APSS), Trento, Italy

Stefano Marcucci

UO Chirurgia Generale e d’Urgenza IRCCS Azienda Ospedaliera Universitaria Sant’Orsola Malpighi c/o Ospedale Maggiore, Bologna, Italy

Laura Mastrangelo

Division of Gastroenterology, Fondazione IRCCS San Gerardo dei Tintori, and University of Milano-Bicocca, School of Medicine, Monza, Italy

Sara Massironi

Oncological Endocrinology Unit, Regina Elena National Cancer Institutre - IFO IRCCS, Roma, Italy

Marialuisa Appetecchia

Servizio di Medicina Nucleare, Azienda USL-IRCCS di Reggio Emilia, Reggio Emilia, Italy

Angelina Filice & Annibale Versari

Department of Surgical, Oncological and Oral Sciences, University of Palermo, Palermo, Italy

Giuseppe Badalamenti

Nuclear Medicine Unit, Azienda Ospedaliera Universitaria-Ferrara, Ferrara, Italy

Mirco Bartolomei

Medical Oncology Unit, Department of Medical & Surgical Specialties, Radiological Sciences & Public Health, University of Brescia at Spedali Civili Hospital, Brescia, Italy

Vito Amoroso

Department of General and Pancreatic Surgery, The Pancreas Institute, University of Verona Hospital Trust, ENETS Center of Excellence, Verona, Italy

Luca Landoni

Oncology Unit - Ospedale IRCCS Casa Sollievo della Sofferenza - San Giovanni Rotondo, Foggia, Italy

Maria Grazia Rodriquenz

Center for Immuno-Oncology, Oncology Department, University Hospital of Siena, Siena, Italy

Monica Valente

Department of Endocrinology University of Naples, Azienda Ospedaliera Universitaria “Federico II”, ENETS CEnter of Excellence, Napoli, Italy

Annamaria Colao

Department of Experimental Medicine, Sapienza University of Rome, Rome, Italy

Andrea Isidori

Endocrine Oncology Program, Endocrine Unit, University Hospital (AOU) of Sassari, Sassari, Italy

Giuseppe Fanciulli

Presidio Ospedaliero di Rho, Milan, Italy

Roberto Bollina

Regional Hospital of Bolzano, Bolzano, Italy

Michele Ciola

HPB Surgery, P. Pederzoli Hospital, Peschiera del Garda, Verona, Italy

Giovanni Butturini

Medical Oncology Unit, Azienda Ospedaliero-Universitaria Pisana, Pisa, Italy

Riccardo Marconcini

Oncological Endocrinology Unit, Department of Medical Sciences University of Turin, Turin, Italy

Emanuela Arvat

Oncology Unit, A. Perrino Hospital, Brindisi, Italy

Saverio Cinieri

Department of Medical Oncology, Università Politecnica Delle Marche, AOU Ospedali Riuniti Delle Marche, Ancona, Italy

Rossana Berardi

Nuclear Medicine Unit, Department of Biomedical and Dental Sciences and Morpho-Functional Imaging, University of Messina, Messina, Italy

Sergio Baldari

Medical Oncology Unit, Ospedale Cardarelli, Naples, Italy

Ferdinando Riccardi

Medical Oncology, Santa Maria Goretti Hospital, Latina, Italy

Chiara Spoto

Medical Oncology Department, Istituto Oncologico del Mediterraneo, Viagrande, Catania, Italy

Dario Giuffrida

Oncology Unit, S. Filippo Neri Hospital ASL Roma 1, Rome, Italy

Domenico Gattuso

Endocrinology Unit, Department of Internal Medicine & Medical Specialties (DiMI), IRCCS Ospedale Policlinico San Martino, University of Genoa, Genoa, Italy

Diego Ferone

Digestive Surgery, European Institute of Oncology IRCCS, ENETS Center of Excellence, Milan, Italy

Emilio Bertani

Humanitas Research Hospital –IRCCS, Pancreatic Surgery Unit, Rozzano, and Humanitas University, Department of Biomedical Sciences, Pieve Emanuele, Italy

Alessandro Zerbi

IMT School for Advanced Studies Lucca, Lucca, Italy

Marco Marini

F.P., M.F.: conception, study design, study coordination, interpretation of data. D.F., M.R., E.B., A.V., A.Z., V.A.: design of the work. M.M., M.R.: data analysis. All authors: acquisition of data, work revision.