The first five years of life.
D002662:Child Health Services / Q000458:organization & administration*; D002675:Child, Preschool; D004739:England; D005194:Family Practice; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D010348:Patient Care Team / Q000458:organization & administration; D011159:Population Surveillance; D011322:Primary Prevention