Primary gastrointestinal lymphoma in Thailand.
D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D005260:Female; D005770:Gastrointestinal Neoplasms / Q000453:epidemiology*; D006801:Humans; D016403:Lymphoma, Large B-Cell, Diffuse / Q000453:epidemiology*; D008228:Lymphoma, Non-Hodgkin / Q000453:epidemiology*; D008297:Male; D008875:Middle Aged; D013785:Thailand