Changing smoking patterns in Calvados (France).
D000328:Adult; D000367:Age Factors; D000368:Aged; D005260:Female; D005602:France; D006801:Humans; D008297:Male; D008875:Middle Aged; D012424:Rural Population; D012737:Sex Factors; D012907:Smoking; D011795:Surveys and Questionnaires; D014505:Urban Population