title: Gastric cancer in American negroes.
mesh_terms: D000017:ABO Blood-Group System; D000328:Adult; D000367:Age Factors; D000368:Aged; D000752:Anemia, Pernicious / Q000150:complications; D044383:Black People; D004381:Duodenal Ulcer / Q000150:complications; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010437:Peptic Ulcer / Q000150:complications; D012189:Retrospective Studies; D012737:Sex Factors; D013274:Stomach Neoplasms / Q000175:diagnosis* / Q000453:epidemiology / Q000473:pathology / Q000601:surgery; D014481:United States; D001741:Black or African American
chemical_list: D000017:ABO Blood-Group System