WHO study examines teenage health in 28 countries.
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D000293:Adolescent; D000428:Alcohol Drinking / Q000453:epidemiology; D002648:Child; D015444:Exercise; D005260:Female; D014943:Global Health; D015438:Health Behavior; D006304:Health Status; D006801:Humans; D008297:Male; D012907:Smoking / Q000453:epidemiology; D014944:World Health Organization