[DECLINING INCIDENCE OF GASTRIC AND DUODENAL ULCER PERFORATION IN DENMARK IN RECENT YEARS].
D003718:Denmark; D004381:Duodenal Ulcer; D006801:Humans; D015994:Incidence; D010439:Peptic Ulcer Perforation; D013223:Statistics as Topic; D013514:Surgical Procedures, Operative
DENMARK; PEPTIC ULCER PERFORATION; STATISTICS; SURGERY, OPERATIVE
AFTAGENDE FREKVENS AF ULCUS VENTRICULI ET DUODENI PERFORATUM I DANMARK I DE SENERE AR.