Perforated peptic ulcer in the elderly.
Watkins
R M
RM
Collin
J
J
D000368:Aged; D000375:Aging; D005260:Female; D006801:Humans; D008131:London; D008297:Male; D008875:Middle Aged; D010439:Peptic Ulcer Perforation / Q000453:epidemiology*; D012737:Sex Factors