[1] Hosp Clin Barcelona, Endocrinol & Nutr Dept, Barcelona 08036, Spain
[2] Inst Salud Carlos III ISCIII, Ctr Invest Biomed Red Fisiopatol Obesidad & Nutr, Madrid 28029, Spain
[3] Fundacio Clin Recerca Biomed FCRB, Barcelona 08036, Spain
[4] Hosp Clin Barcelona, Nephrol & Kidney Transplantat Dept, Barcelona 08036, Spain
[5] Fundacio Clin, IDIBAPS, Lab Expt Nefrol & Trasplantament LENIT, CRB CELLEX, Barcelona 08036, Spain
[6] Althaia, Endocrinol & Nutr Dept, Univ Hlth Network, Manresa 08243, Spain
[7] Inst Invest Biomed August Pi Sunyer IDIBAPS, Barcelona 08036, Spain
[8] Hosp Clin Barcelona, Gastrointestinal Surg Dept, Obes Unit, Barcelona 08036, Spain
[9] Ctr Invest Biomed Red Diabet & Enfermedades Metab, Barcelona 28029, Spain