title: THE INCIDENCE IN AYRSHIRE OF PERFORATED PEPTIC ULCER.
mesh_terms: D000375:Aging; D006801:Humans; D015994:Incidence; D010439:Peptic Ulcer Perforation; D012606:Scotland; D012621:Seasons; D012723:Sex; D013223:Statistics as Topic
keywords: AGING; PEPTIC ULCER PERFORATION; SCOTLAND; SEASONS; SEX; STATISTICS