[Health related behavior in high school students: I. Smoking habits].
D000293:Adolescent; D000294:Adolescent Behavior; D001294:Attitude to Health; D002648:Child; D003371:Cough / Q000209:etiology; D005260:Female; D006801:Humans; D008297:Male; D012907:Smoking; D011795:Surveys and Questionnaires