Adolescent health research as we proceed into the twenty-first century.
Division of Adolescent/Young Adult Medicine, Children's Hospital, Harvard Medical School, Boston, Massachusetts, USA.
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D000293:Adolescent; D000295:Adolescent Medicine / Q000639:trends*; D006801:Humans; D012106:Research / Q000639:trends; D012109:Research Support as Topic / Q000639:trends; D012955:Societies, Medical / Q000639:trends; D014481:United States