a retrospective epidemiologic study of 826 cytologically and/or histologically confirmed lung cancer cases ( 219 females and 607 males ) , 979 hospital controls , and 539 neighborhood controls was undertaken in havana , cuba , to investigate whether the high lung cancer mortality rates in this country could be explained by the cigarette and cigar consumption habits , including the smoking of dark-tobacco cigarettes .
C0242379
lung cancer
C0024109
lung