[1] Hosp Clin Barcelona, Unidad Enfermedades Infecciosas, Barcelona, Spain
[2] Hosp Univ Quiron, Serv Endocrinol, Madrid, Spain
[3] Hosp Gen Univ Rafael Mendez, Unidad Endocrinol, Murcia, Spain
[4] Hosp Univ Reina Sofia, Serv Traumatol, Cordoba, Spain
[5] Hosp Ramon & Cajal, Serv Enfermedades Infecciosas, E-28034 Madrid, Spain
[6] Hosp Univ Salamanca, Serv Reumatol, Salamanca, Spain
[7] Hosp Santa Creu & Sant Pau, Serv Med Interna, Barcelona, Spain
[8] Hosp Clin San Carlos, Madrid, Spain
[9] Hosp Santa Creu & Sant Pau, Dept Med Interna, Unidad Metab Mineral, Barcelona, Spain
[10] Hosp Badalona Germans Trias & Pujol, Serv Med Interna, Barcelona, Spain
[11] Complejo Hosp Univ Vigo CHUVI, Hosp Xeral Cies, Unidad VIH, Vigo, Pontevedra, Spain
[12] Hosp Univ San Cecilio, Serv Endocrinol, Unidad Metab Oseo, Granada, Spain