[Tobacco information in the schools--a 2 year follow-up of the pupils' smoking habits].
D000293:Adolescent; D002648:Child; D005260:Female; D005500:Follow-Up Studies; D006266:Health Education; D006801:Humans; D008297:Male; D012572:School Health Services; D012737:Sex Factors; D000074606:Smoking Prevention; D013548:Sweden
Tobaksinformationen i skolan--tvåårsuppfoljning av elevernas rökvanor.