1 Surgery of the Alimentary Tract, Sant'Orsola Hospital, Via Massarenti 9, 40138, Bologna, Italy. paolo.bernante@aosp.bo.it.
2 Centre for the Study and Research of Treatment for Morbid Obesity, Alma Mater Studiorum University, Via Massarenti 9, 40138, Bologna, Italy. paolo.bernante@aosp.bo.it.
3 Department of Medical and Surgical Sciences, Alma Mater Studiorum University, Via Massarenti 9, 40138, Bologna, Italy. paolo.bernante@aosp.bo.it.
4 Surgery of the Alimentary Tract, Sant'Orsola Hospital, Via Massarenti 9, 40138, Bologna, Italy.
5 Centre for the Study and Research of Treatment for Morbid Obesity, Alma Mater Studiorum University, Via Massarenti 9, 40138, Bologna, Italy.
6 Department of Medical and Surgical Sciences, Alma Mater Studiorum University, Via Massarenti 9, 40138, Bologna, Italy.
7 Digestive Unit, Archet 2 Hospital, University Hospital of Nice, 06202, Nice, France.
8 Inserm, U1065, Team 8 "Hepatic complications of obesity", 06204, Nice, France.