[1] Hosp Sierrallana, Torrelavega, Spain
[2] Hosp Univ Marques Valdecilla, IDIVAL, Res Grp Genet Epidemiol & Atherosclerosis Syst, Santander, Spain
[3] Hosp Univ Marques Valdecilla, Dept Rheumatol, Santander, Spain
[4] Hosp Univ Marques Valdecilla, Santander, Spain
[5] Del Mar Univ Hosp, Barcelona, Spain
[6] Hosp Clin Barcelona, Barcelona, Spain
[7] Hosp Valencia, Valencia, Spain
[8] Hosp Doctor Peset, Valencia, Spain
[9] Hosp Valle De Hebron, Barcelona, Spain
[10] Hosp San Cecilio, Granada, Spain
[11] Hosp De Cruces, Bilbao, Spain
[12] Hosp Univ Donostia, San Sebastian, Pais Vasco, Spain
[13] Hosp Basurto, Bilbao, Spain
[14] Hosp Mostoles, Madrid, Spain
[15] Hosp Alicante, Alicante, Spain
[16] Hosp La Paz IdiPAZ, Madrid, Spain
[17] Hosp Clin San Carlos, Madrid, Spain
[18] Hosp Pontevedra, Coruna, Spain
[19] Hosp La Princesa, Madrid, Spain
[20] Hosp Univ Reina Sofia, Cordoba, Spain
[21] Hosp Santiago De Compostela, Santiago De Compostela, Spain
[22] Hosp Cabuenes, Gijon, Spain
[23] Hosp Lucus Augusti, Lugo, Spain
[24] Hosp Arrixaca, Murcia, Spain
[25] Hosp 12 Octubre, Madrid, Spain
[26] Fdn Alcorcon Univ Hosp, Madrid, Spain
[27] Hosp Merida, Merida, Spain
[28] Hosp Severo Ochoa, Madrid, Spain
[29] Hosp San Juan, Alicante, Spain
[30] Hosp Palencia, Palencia, Spain
[31] Univ Autonoma, Princesa Univ Hosp, Madrid, Spain
[32] Hosp Univ Marques de Valdecilla, Santander, Cantabria, Spain