Smoking habits of university students.
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D002648:Child; D002675:Child, Preschool; D005191:Family Characteristics; D005260:Female; D005387:Finland; D006801:Humans; D008297:Male; D009042:Motivation; D011159:Population Surveillance; D012424:Rural Population; D012737:Sex Factors; D012907:Smoking / Q000453:epidemiology*; D013334:Students; D014495:Universities; D014505:Urban Population