1 Department of Surgical Sciences, University of Cagliari, Cagliari, Italy.
2 Endocrine Surgery Unit, Ospedale Policlinico San Martino, Genoa, Italy.
3 General Surgery and Surgical Specialties Unit, Santa Maria University Hospital Terni and University of Perugia, Medical School, Terni, Italy.
4 General Surgery Department, Endocrine Surgery Unit, Azienda USL Toscana Nord-Ovest, Pontedera, Italy.
5 Department of Surgery, Pietro Valdoni, Sapienza University of Rome, Rome, Italy.
6 Department of Medicine, Dentistry and Biotechnology, University 'G. D'Annunzio', Chieti, Italy.
7 Department of Surgery, Unit of General Surgery, University Hospital of Ferrara and University of Ferrara, Ferrara, Italy.
8 Endocrine Surgery Unit, Pederzoli Hospital, Peschiera del Garda, Italy.
9 Division of General and Oncological Surgery, Department of Translational Medical Sciences, University of Campania 'Luigi Vanvitelli', Naples, Italy.
10 Endocrine Surgery, ASST Santi Paolo e Carlo University of Milan, Milan, Italy.
11 General Surgery Unit, Parma University Hospital, Parma, Italy.
12 Division for Minimally Invasive and Endocrine Surgery, University of Messina, Messina, Italy.
13 Department of Medicine, Surgery and Health Sciences, Azienda Sanitaria Universitaria Giuliano Isontina, Trieste, Italy.
14 Division of Thyroid Surgery, Department of Medical and Advanced Surgical Sciences, University of Campania 'Luigi Vanvitelli', Naples, Italy.
15 Department of Surgical, Oncological and Stomatological Sciences, University of Palermo, Palermo, Italy.
16 Endocrine Surgery Unit, Department of Surgery, Oncology and Gastroenterology, University of Padua, Padua, Italy.
17 Unit of Endocrine Surgery, AOU Mater Domini, Catanzaro, Italy.
18 Division of Endocrine Surgery, Department of Gastroenterological, Endocrine-Metabolic and Nephro-Urologic Sciences, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Rome, Italy.
19 Endocrine Surgery Unit, Department of Oncological-Mininvasive Surgery, Niguarda Hospital, Milan, Italy.
20 Head and Neck Oncological Surgery, Candiolo Cancer Institute, Candiolo, Italy.