1. Bariatric Unit, ELSAN, Clinique Bouchard, Marseille, France.
2. Bariatric Unit, ELSAN, Clinique St-Michel, Toulon, France.
3. Bariatric Unit, Sacre Coeur Hospital, Montreal, Canada.
4. Division of Bariatric Surgery of DIAGNOMED, Affiliated Institution of the University of Buenos Aires, Buenos Aires, Argentina.
5. Universitat Autònoma de Barcelona, Barcelona, Spain.
6. Endocrine, Metabolic and Bariatric Unit, General Surgery Department, Hospital Vall d'Hebron, Barcelona, Spain.