[1] Hosp Univ 12 Octubre, Infect Dis Unit, Inst Invest Hosp 12 Octubre i 12, Madrid 28041, Spain
[2] Hosp Univ Marques de Valdecilla, Inst Formac & Invest Marques de Valdecilla IFIMAV, Dept Nephrol, Santander, Spain
[3] Hosp Clin Barcelona, Inst Invest Biomed August Pi & Sunyer IDIBAPS, Dept Nephrol, Barcelona, Spain
[4] Univ Valencia, Inst Invest Sanitaria INCLIVA, Hosp Clin Univ, Dept Microbiol, Valencia, Spain
[5] Univ Oviedo, Hosp Cent Asturias, Dept Nephrol, E-33080 Oviedo, Spain
[6] Hosp Univ Son Espases, Dept Nephrol, Palma De Mallorca, Spain
[7] Fundacio Puigvert, Dept Nephrol, Barcelona, Spain
[8] Hosp Univ Carlos Haya, Dept Nephrol, Malaga, Spain
[9] Hosp Univ Virgen del Rocio, Inst Biomed Sevilla IBIS, Dept Nephrol, Seville, Spain
[10] Hosp Univ Virgen de la Arrixaca, Dept Nephrol, Murcia, Spain
[11] Hosp Gen Alicante, Nephrol Unit, Alicante, Spain
[12] Hosp Univ 12 Octubre, Dept Nephrol, Inst Invest Hosp 12 Octubre i 12, Madrid 28041, Spain
[13] Hosp Univ Vall dHebron, Dept Nephrol, Barcelona, Spain
[14] Hosp Univ Infanta Cristina, Dept Nephrol, Badajoz, Spain