[1] Hosp Santa Creu & Sant Pau, Serv Endocrinol & Nutr, Barcelona, Spain
[2] Hosp Clin & Univ, Inst Invest Biomed August Pi & Sunyer, Serv Bioquim & Genet Mol CDB, Barcelona, Spain
[3] Hosp Santa Creu & Sant Pau, Serv Bioquim Clin, Barcelona, Spain
[4] Univ Autonoma Barcelona, Dept Bioquim & Biol Mol, Madrid, Spain
[5] Inst Salud Carlos III, CIBERDEM, Madrid, Spain
[6] Univ Autonoma Barcelona, Dept Med, Madrid, Spain
[7] Inst Salud Carlos III, CIBER Bioengn Biomat & Nanotechnol, Madrid, Spain