1 Department of Clinical Sciences, Lund University, Lund, Sweden.
2 Department of Surgery and Gastroenterology, Skane University Hospital, Lund, Sweden.
3 Department of General and Endocrine Surgery, Onze-Lieve-Vrouw Hospital Aalst, Aalst, Belgium.
4 Department of Surgery, Ege University Hospital, Izmir, Turkey.
5 Multidisciplinary Unit of Metabolic, Endocrine and Thyroid Surgery, Department of Surgery, Université de Lorraine, Centre Hospitalier Régional Universitaire Nancy, Vandoeuvre-le`s Nancy, France.