title: Early adolescent alcohol consumption and self-concept, social class and knowledge of alcohol.
mesh_terms: D000293:Adolescent; D000294:Adolescent Behavior; D000428:Alcohol Drinking; D002648:Child; D005260:Female; D006801:Humans; D008297:Male; D000297:Psychology, Adolescent; D012649:Self Concept; D012923:Social Class