TY - JOUR T1 - Navigating the complexity of ulcerative colitis JF - Canadian Family Physician JO - Can Fam Physician SP - 568 LP - 572 VL - 57 IS - 5 AU - Mark Lees AU - Loren Regier AU - Brent Jensen Y1 - 2011/05/01 UR - http://www.cfp.ca/content/57/5/568.abstract N2 - ER -