Evidencias en Pediatría (EP / Evidences in Pediatrics) is a publication of the “Asociación Española de Pediatría” (AEP / Spanish Association of Pediatrics). Its contents are elaborated mainly by members of the Grupo de Trabajo de Pediatría Basada en la Evidencia (Evidence Based Pediatrics Working Group). This group is part of both, the AEP and the “Asociación Española de Pediatría de Atención Primaria” (Spanish Association of Primary Care Pediatrics / AEPap).