RT Journal Article SR Electronic T1 Effectiveness of omalizumab in severe persistent asthma under real-life conditions JF Canadian Family Physician JO Can Fam Physician FD The College of Family Physicians of Canada SP 643 OP 645 VO 60 IS 7 A1 D’Urzo, Anthony D. A1 Wong, Jenny YR 2014 UL http://www.cfp.ca/content/60/7/643.abstract AB