[1] Wilhelmina Ziekenhuis, Dept ENT Head & Neck Surg, Assen, Netherlands
[2] Zentrum Rhinol & Allergol, Dept Otorhinolaryngol & Head & Neck Plast Surg, Wiesbaden, Germany
[3] Pulmonol Hosp, Torokbalint, Hungary
[4] MEDA Pharma GmbH & Co KG, Global Med Affairs, Bad Homburg, Germany
[5] Mylan Inc, Canonsburg, PA USA
[6] MEDA Pharma GmbH & Co KG, GBK Clin Affairs, Bad Homburg, Germany
[7] Inst Clin & Expt Pneumol, Dept Resp & Pulm Dis, Karl Landsteiner Gesell, Vienna, Austria
[8] Roy Natl Throat Nose & Ear Hosp, London, England
[9] Univ Aberdeen, Ctr Acad Primary Care, Div Appl Hlth Sci, Aberdeen, Scotland
[10] Observat & Pragmat Res Inst, Singapore, Singapore
[11] Univ Barcelona, ENT Dept, Rhinol Unit & Smell Clin, CIBERES,Hosp Clin Barcelona,IDIBAPS, Barcelona, Catalonia, Spain