1. Ozel Saglik Hospital, Centre for Endocrine Surgery , Izmir , Turkey
2. Department of General Surgery, Koc University School of Medicine , Istanbul , Turkey
3. Department of Surgery (CVMC), Unit of Endocrine and Metabolic Surgery, University of Lorraine, CHU Nancy—Hospital Brabois Adultes , Nancy , France
4. Department of General and Endocrine Surgery, Onze-Lieve-Vrouw (OLV) Hospital , Aalst , Belgium
5. Department of General, Visceral and Transplantation Surgery, Section of Endocrine Surgery, University Medicine Mainz, Johannes-Gutenberg University , Mainz , Germany
6. Università Cattolica del Sacro Cuore, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, UOC Chirurgia Endocrina e Metabolica, Centro di Ricerca in Chirurgia Endocrina e dell’Obesità , Rome , Italy
7. Department of Surgery, Oncology and Gastroenterology, Endocrine Surgery Unit, University of Padova , Padua , Italy
8. Department of Head and Skin, University Hospital Ghent , Ghent , Belgium
9. Department of General Surgery, AZ Damiaan , Ostend , Belgium
10. Clinic for General, Visceral and Transplantation Surgery, Section of Endocrine Surgery, University Medical Centre Mainz , Mainz , Germany
11. Department of General Surgery, University of Granada, Hospital Universitario Virgen de las Nieves , Granada , Spain