The high-risk factors in ulcerative colitis. A guide to selection of patients for surgical treatment.
D000367:Age Factors; D000368:Aged; D001803:Blood Transfusion; D003093:Colitis, Ulcerative / Q000150:complications / Q000188:drug therapy / Q000401:mortality / Q000601:surgery*; D003110:Colonic Neoplasms / Q000150:complications*; D006801:Humans; D008875:Middle Aged; D011379:Prognosis; D012004:Rectal Neoplasms / Q000150:complications*; D013997:Time Factors