[1] La Princesa Univ Hosp, La Princesa Biomed Res Fdn, Healthcare Res Inst, Dept Internal Med, Madrid 28006, Spain
[2] Autonomous Univ Madrid, Hosp La Paz, La Paz Univ Hosp, Dept Internal Med,Inst Hlth Res IdiPAZ, Madrid 28046, Spain
[3] Univ Cordoba, Reina Sofia Univ Hosp, Maimonides Biomed Res Inst Cordoba IMIBIC, Lipids & Atherosclerosis Unit,Dept Internal Med, Cordoba 14004, Spain
[4] Carlos III Inst Hlth, CIBER Physiopathol Obes & Nutr CIBEROBN, Madrid 28029, Spain
[5] 12 Octubre Univ Hosp, Internal Med Dept, Madrid 28041, Spain
[6] Bellvitge Univ Hosp IDIBELL, Internal Med Dept, Barcelona 08907, Spain
[7] Zamora Hosp Complex, Internal Med Dept, Zamora 49022, Spain
[8] San Juan de Alicante Univ Hosp, Internal Med Dept, Alacant 03550, Spain
[9] Henares Hosp, Internal Med Dept, Coslada 28822, Spain
[10] La Fe Univ Hosp, Internal Med Dept, Valencia 46026, Spain
[11] Costa Sol Hosp, Internal Med Dept, Marbella 29603, Spain
[12] Ourense Univ Hosp Complex, Internal Med Dept, Orense 32005, Spain
[13] Infanta Margarita Hosp, Internal Med Dept, Cabra 14940, Spain
[14] Alto Guadalquivir Hosp, Internal Med Dept, Andujar 23740, Spain
[15] Pozoblanco Hosp, Internal Med Dept, Pozoblanco 14400, Spain
[16] Platon Hosp, Internal Med Dept, Barcelona 08006, Spain
[17] Castellon Univ Gen Hosp, Internal Med Dept, Castellon De La Plana 12004, Spain
[18] Univ Malaga, Biomed Res Inst Malaga IBIMA, Reg Univ Hosp Malaga, Internal Med Dept, Malaga 29010, Spain
[19] Infanta Cristina Univ Hosp, Internal Med Dept, Parla 28981, Spain
[20] Gregorio Maranon Univ Hosp, Internal Med Dept, Madrid 28007, Spain