Epidemiologic studies of mortality in patients with ulcerative colitis.
D000368:Aged; D003093:Colitis, Ulcerative / Q000401:mortality*; D005060:Europe; D006801:Humans; D007557:Israel; D008297:Male; D008875:Middle Aged; D012537:Scandinavian and Nordic Countries; D014481:United States; D014687:Venezuela