[1] Hosp Ramon & Cajal, Dept Infect Dis, E-28034 Madrid, Spain
[2] Bellvitge Hosp, Dept Infect Dis, Barcelona, Spain
[3] Hosp Morales Meseguer, Dept Microbiol & Infect Dis, Murcia, Spain
[4] Hosp NS Aranzazu, Dept Infect Dis, San Sebastian, Spain
[5] Hosp Navarra, Dept Infect Dis, Pamplona, Spain
[6] Hosp La Paz, AIDS Unit, Madrid, Spain
[7] Abbott Labs, Dept Med, Madrid, Spain