[Elements of epidemiologic research on tobacco smoking].
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Centro per la Lotta contro le Malattie Cardiovascolari ASS 4 Medio Friuli Piazzale S. Maria della Misericordia, 15 33100 Udine.
D016021:Epidemiologic Studies; D006801:Humans; D012107:Research Design; D012907:Smoking / Q000453:epidemiology; D011795:Surveys and Questionnaires; D014029:Tobacco Use Disorder / Q000175:diagnosis* / Q000453:epidemiology