[1] Hosp Univ 12 Octubre, Dept Pediat, Pediat Infect Dis Unit, Madrid, Spain
[2] Inst Invest Sanitaria Hosp 12 Octubre IMAS12, Pediat Res & Clin Trials Unit UPIC, Madrid, Spain
[3] Hosp 12 Octubre, Fdn Invest Biomed, Madrid, Spain
[4] RITIP Traslat Res Network Pediat Infect Dis, Madrid, Spain
[5] Hosp Univ Vall dHebron, Vall Hebron Res Inst, Pediat Infect Dis & Immunodeficiencies Unit, Barcelona, Spain
[6] St Joan de Deu Universitary Hosp Res Fdn, Infect & Imported Dis Unit, Dept Pediat, Barcelona, Spain
[7] Hosp Univ Gregorio Maranon, Pediat Infect Dis Unit, Madrid, Spain
[8] Hosp Univ La Paz, Fdn IdiPaz, Pediat & Infect Dis Unit, Pediat Dept, Madrid, Spain
[9] Red Invest Traslac Infectol Pediat RITIP, Madrid, Spain
[10] Hosp Univ Infanta Cristina, Pediat Dept, Madrid, Spain
[11] Hosp Univ Getafe, Pediat Dept, Madrid, Spain
[12] Hosp Univ Son Espases Palma Mallorca, Pediat Dept, Palma De Mallorca, Illes Baleares, Spain
[13] Hosp Univ San Pedro, Pediat Dept, Logrono, La Rioja, Spain
[14] Complejo Hosp Navarra, Pediat Dept, Navarra, Spain
[15] Complejo Hosp Univ Albacete, Albacete, Castilla La Man, Spain
[16] Hosp Univ Nino Jesus, Pediat Dept, Madrid, Spain
[17] St Joan de Deu Universitary Hosp, CIBERES, Pediat Intens Care Unit, Barcelona, Spain
[18] Univ Complutense Madrid, Hosp Univ 12 Octubre, Dept Pediat,Pediat Intens Care Unit,Sch Med, Carlos III Hlth Inst,Mother Child Hlth & Dev Netw, Madrid, Spain
[19] Hosp Univ 12 Octubre, Dept Pediat, Pediat Cardiol Unit, Madrid, Spain
[20] HGU Gregorio Maranon, Dept Paediat Cardiol, Madrid, Spain
[21] Univ Europea Madrid, Hosp Univ Infanta Sofia, Pediat Dept, Pediat Res Grp, Madrid, Spain