Full text: Available Index: LILACS (Americas) Main subject: Primary Health Care / Global Health Strategies / Health Strategies / Health Plan Implementation Type of study: Systematic review of observational studies Limits: Child / Child, preschool / Infant Language: Spanish Journal: Arch. argent. pediatr Journal subject: Pediatrics Year: 2003 Type: Article Affiliation country: Argentina Institution/Affiliation country: Consejo Asesor de Archivos Argentinos de Pediatría/AR