[1] Toronto Allergy & Asthma Clin, Evidence Based Med Educ, Toronto, ON, Canada
[2] Ctr Hosp Univ Sart Tilman Liege, Liege, Belgium
[3] Humanitas Univ, Dept Biomed Sci, Milan, Italy
[4] Hosp Univ Vall dHebron, Dept Pulmonol, Barcelona, Spain
[5] Gartnavel Royal Hosp, Resp Med, Glasgow, Lanark, Scotland
[6] Emory Univ, Divis Pulm Allergy Crit Care & Sleep Med, Dept Med, Atlanta, GA USA
[7] Specialty Care TA, Global Med, Brentford, England
[8] GSK, Biostat, Stevenage, Herts, England
[9] GSK, Value Evidence & Outcomes, Collegeville, PA USA
[10] GSK, Epidemiol, London, England
[11] GSK, Real World Study Delivery, Value Evidence & Outcomes, Global Med, Stevenage, Herts, England