Preliminary Findings: The Feasibility Study for a Randomized Controlled Trial of Clarithromycin in Chronic Rhinosinusitis. - Bewick, Jessica C.; Egro, Francesco M.; Masterson, Liam M.; Philpott, Carl M. (Otolaryngology--head and neck surgery: official journal of American Academy of Otolaryngology-Head and Neck Surgery, 2014)