Carcinoid tumors of the gastrointestinal tract.
D000293:Adolescent; D000328:Adult; D000368:Aged; D001063:Appendiceal Neoplasms / Q000453:epidemiology; D002140:California; D002276:Carcinoid Tumor / Q000453:epidemiology*; D002430:Cecal Neoplasms / Q000453:epidemiology; D002648:Child; D004379:Duodenal Neoplasms / Q000453:epidemiology; D005260:Female; D005770:Gastrointestinal Neoplasms / Q000453:epidemiology*; D006801:Humans; D007082:Ileum; D007414:Intestinal Neoplasms / Q000453:epidemiology; D008297:Male; D008467:Meckel Diverticulum; D008875:Middle Aged; D012004:Rectal Neoplasms / Q000453:epidemiology