Campylobacter pylori and peptic ulcer disease.
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002167:Campylobacter / Q000302:isolation & purification; D002169:Campylobacter Infections / Q000382:microbiology*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D013276:Stomach Ulcer / Q000382:microbiology* / Q000473:pathology