A review and critique of controlled studies of the effectiveness of preventive child health care.
D002648:Child; D002662:Child Health Services / Q000458:organization & administration*; D002675:Child, Preschool; D005069:Evaluation Studies as Topic; D006801:Humans; D011314:Preventive Health Services / Q000458:organization & administration*; D012107:Research Design; D014481:United States