The Ambulatory Pediatric Association--historical notes.
D000553:Ambulatory Care; D002648:Child; D002675:Child, Preschool; D049673:History, 20th Century; D006801:Humans; D007223:Infant; D007348:Insurance, Health; D010044:Outpatient Clinics, Hospital; D010372:Pediatrics / Q000266:history*; D012955:Societies, Medical / Q000266:history*; D014481:United States