[1] Univ Autonoma Barcelona, CIBER Diabet Enfermedades Metabol Asociadas CIBER, Inst Invest Biomed St Pau, Hosp Santa Creu & St Pau,Inst Recerca, E-08193 Barcelona, Spain
[2] Univ Barcelona, Fac Biol, Barcelona, Spain
[3] Hosp Santa Creu & Sant Pau, Inst Invest Biomed St Pau, Inst Recerca, Barcelona, Spain
[4] Hosp Univ Vall dHebron, Inst Recerca, Bioquim & Unitat Cirurgia, Barcelona, Spain
[5] Hosp Arnau Vilanova, Unitat Cirurgia, Lleida, Spain
[6] Hosp Univ Vall dHebron, Inst Recerca, Unitat Recerca Diabet & Metab, CIBER Diabet & Enfermedades Metabol Asociadas CIB, Barcelona, Spain