Assertion: duodenal ulcer | /r/AtLocation | men
Facets:
Source sentences:
text: duodenal ulcers are more common in men, whereas gastric ulcers affect men and women more or less equally
text: Duodenal ulcers, which account for 80 percent of peptic ulcers, are more common in men than in women, but stomach ulcers affect women more frequently.
text: Duodenal ulcers are 4 times more common in men than in women and 4 to 5 times more common than gastric ulcers.