[1] Univ Autonoma Barcelona, Ctr Excellence EAC BC, Hosp Vall dHebron, Endocrine Metab & Bariatr Unit,Gen Surg Dept, Barcelona, Spain
[2] Univ Hosp Virgen del Rocio, Endocrinol & Nutr Serv, Clin Nutr Unit, Seville, Spain
[3] Univ Seville, Hosp Quironsalud Sagrado Corazon, Univ Hosp Virgen del Rocio, Unit Innovat Minimally Invas Surg,Dept Surg, Seville, Spain
[4] Hosp Gregorio Maranon, Serv Endocrinol & Nutr, Unidad Nutr Clin & Dietet, Madrid, Spain
[5] Univ Seville, Hosp Univ Virgen Macarena, UGC Cirugia Gen & Aparato Digest, Seville, Spain
[6] Clin Obesitas, Valencia, Spain
[7] Univ Autonoma Barcelona, Hosp Mar Barcelona, Serv Endocrinol, Dept Med,CIBERobn,ISCIII, Barcelona, Spain
[8] UdL, IRBLleida, Hosp Univ Arnau de Vilanova Lleida, Serv Endocrinol & Nutr, Avda Rovira Roure 80, Lleida 25198, Spain
[9] Hosp Clin San Carlos, Unidad Cirugia Esofagogastr Metab & Bariatr, Madrid, Spain
[10] Univ Complutense, Fac Med, Hosp Clin San Carlos, Serv Endocrinol & Nutr,Idissc, Madrid, Spain
[11] Hosp Clin Univ Virgen de Victoria Malaga, Serv Endocrinol & Nutr, Malaga, Spain
[12] Hosp Univ Virgen del Rocio, UGEN, Unidad Nutr Clin, Seville, Spain
[13] Hosp Univ Virgen del Rocio, UGEN, Unidad Obesidad Morbida, Seville, Spain