Regional and social differences in cancer incidence of the digestive tract in the German Democratic Republic.
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D000428:Alcohol Drinking; D002648:Child; D002675:Child, Preschool; D004938:Esophageal Neoplasms / Q000453:epidemiology* / Q000209:etiology; D005260:Female; D005770:Gastrointestinal Neoplasms / Q000453:epidemiology* / Q000209:etiology; D005843:Geography; D005859:Germany, East; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D008875:Middle Aged; D012737:Sex Factors; D012907:Smoking; D012959:Socioeconomic Factors