title: Prospective study of Helicobacter pylori infection in primary gastric lymphoma.
mesh_terms: D000328:Adult; D000368:Aged; D005260:Female; D016481:Helicobacter Infections / Q000150:complications*; D016480:Helicobacter pylori; D006801:Humans; D016393:Lymphoma, B-Cell / Q000382:microbiology*; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies; D013274:Stomach Neoplasms / Q000382:microbiology*