title: A study of carcinoid tumours of gastro-intestinal tract.
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D002276:Carcinoid Tumor / Q000453:epidemiology / Q000473:pathology*; D002648:Child; D005260:Female; D005770:Gastrointestinal Neoplasms / Q000453:epidemiology / Q000473:pathology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D012737:Sex Factors