title: [Risk factors for cancer of the oral cavity and esophagus in a high incidence region].
abstract: Relative risk of precancerous changes development in the oral cavity is much higher in nas chewers and cigarette smokers. It is particularly higher in users of both. Insufficient levels of riboflavin, carotin and vitamin A were found in some of those examined.
mesh_terms: D000368:Aged; D000428:Alcohol Drinking; D001361:Avitaminosis / Q000150:complications; D004938:Esophageal Neoplasms / Q000453:epidemiology* / Q000209:etiology; D006801:Humans; D008297:Male; D008875:Middle Aged; D009062:Mouth Neoplasms / Q000453:epidemiology* / Q000209:etiology; D011230:Precancerous Conditions / Q000453:epidemiology; D012306:Risk; D012907:Smoking; D014610:Uzbekistan
vernacular_title: Faktory riska raka polosti rta i pishchevoda v regione s vysokoĭ zabolevaemost'iu.