[1] Hosp Clin Univ Lozano Blesa, Div Infect Dis, Zaragoza, Spain
[2] Hosp Univ La Paz, Paediat Intens Care Unit, Madrid, Spain
[3] Hosp Univ La Paz, Dept Paediat, Paediat Trop & Infect Dis, Madrid, Spain
[4] Hosp Univ La Paz, Dept Pharm, Madrid, Spain
[5] Hosp Univ La Paz, Dept Microbiol, Madrid, Spain
[6] Univ Autonoma Madrid, Sch Med, Dept Paediat, Madrid, Spain
[7] Inst Invest Sanitaria IIS Aragon, Aragon, Spain
[8] Hosp Univ Virgen del Rocio, Paediat Intens Care Unit, Seville, Spain
[9] Hosp San Juan Dios, Paediat Intens Care Unit, Barcelona, Spain
[10] Hosp Virgen Arrixaca, Paediat Intens Care Unit, Murcia, Spain