Ulcerative colitis: Natural history--an optimistic message from Norway.
Peyrin-Biroulet
Laurent
L
Colombel
Jean-Frederic
JF
D002908:Chronic Disease; D003093:Colitis, Ulcerative / Q000453:epidemiology* / Q000503:physiopathology / Q000628:therapy*; D006801:Humans; D009664:Norway / Q000453:epidemiology; D011379:Prognosis; D012307:Risk Factors