title: Medical surveillance of pre-school children.
mesh_terms: D002653:Child Behavior Disorders / Q000175:diagnosis; D002662:Child Health Services; D002675:Child, Preschool; D002658:Developmental Disabilities / Q000175:diagnosis; D005190:Family; D005260:Female; D006306:Health Surveys; D006801:Humans; D008297:Male; D011320:Primary Health Care