[1] H Vall hebron, Internal Med, Barcelona, Spain
[2] Hosp Ramon & Cajal, Internal Med, Madrid, Spain
[3] H Clin, Internal Med, Zaragoza, Spain
[4] H Cabuenes, Internal Med, Asturias, Spain
[5] HUCA, Internal Med, Asturias, Spain
[6] H Miguel Servet, Internal Med, Zaragoza, Spain
[7] H Ribera, Internal Med, Valencia, Spain
[8] H Parc Tauli, Internal Med, Sabadell, Spain
[9] H Virgen Rocio, Internal Med, Seville, Spain
[10] Clin Navarra, Internal Med, Navarra, Spain