1. Department of General and Digestive Surgery, Vall d'Hebron University Hospital, Universitat Autònoma de Barcelona, Barcelona, Spain.
2. Endocrine, Metabolic and Bariatric Unit, Department of General and Digestive Surgery, Vall d'Hebron University Hospital, Universitat Autònoma de Barcelona, Center of Excellence for the EAC-BC, Barcelona, Spain.
3. ELSAN, Clinique Saint Michel, Centre Chirurgical de l'Obésité, Toulon, France.
4. Endocrine, Metabolic and Bariatric Unit, Department of General and Digestive Surgery, Fuenlabrada University Hospital, Rey Juan Carlos University, Madrid, Spain.
5. Department of Gastrointestinal Surgery, Hospital Clinic i Provincial de Barcelona, Universitat de Barcelona, Barcelona, Spain.