title: The history of adolescent medicine: three periods of awareness and development during the twentieth century.
authors.forename: A
authors.initials: A
authors.lastname: Schmidt
mesh_terms: D000293:Adolescent; D016497:Adolescent Health Services / Q000266:history; D000295:Adolescent Medicine / Q000266:history*; D049673:History, 20th Century; D006801:Humans; D012955:Societies, Medical / Q000266:history; D014481:United States