The influence of health education on the use of alcohol and tobacco in adolescence.
D000293:Adolescent; D000328:Adult; D000428:Alcohol Drinking; D006266:Health Education; D006801:Humans; D007899:Leisure Activities; D008137:Longitudinal Studies; D008297:Male; D011446:Prospective Studies; D012907:Smoking / Q000453:epidemiology; D000074606:Smoking Prevention; D013177:Sports; D013557:Switzerland