Canadian clinical practice guidelines for acute and chronic rhinosinusitis.
Desrosiers M, Evans GA, Keith PK, Wright ED, Kaplan A, Bouchard J, Ciavarella A, Doyle PW, Javer AR, Leith ES, et al. Allergy Asthma Clin Immunol. 2011 Feb 10; 7(1):2. Epub 2011 Feb 10.