Knight Darryl A, Yang Ian A, Ko Fanny W S, Lim T K
UBC James Hogg Research Centre, Institute for Heart + Lung Health, Department of Anesthesiology, Pharmacology and Therapeutics, University of British Columbia, Vancouver, Canada.
Respirology. 2012 Apr;17(3):563-72. doi: 10.1111/j.1440-1843.2012.02126.x.