[1] Univ Autonoma Barcelona, Vall dHebron Univ Hosp, Ctr Excellence EAC BC, Dept Gen & Digest Surg,Endocrine Metab & Bariatr, Passeig Vall dHebron 119-129, Barcelona 08035, Spain
[2] Ctr Chirurg Obes, Clin St Michel, ELSAN, F-83100 Toulon, France
[3] Igualada Univ Hosp, Dept Gen & Digest Surg, Av Catalunya 11, Barcelona 08700, Spain
[4] Univ Autonoma Barcelona, Vall dHebron Univ Hosp, Dept Gen & Digest Surg, Passeig Vall dHebron 119-129, Barcelona 08035, Spain
[5] Corachan Clin, UCON, Obes & Nutr Surg Unit, Tres Torres 7, Barcelona 08017, Spain
[6] Rey Juan Carlos Univ, Fuenlabrada Univ Hosp, Dept Gen & Digest Surg, Endocrine Metab & Bariatr Unit, Camino Molino 2, Madrid 28942, Spain