[1] Kings Coll London, Dept Otorhinolaryngol, London, England
[2] Univ Barcelona, Hosp Clin Barcelona, FRCB IDIBAPS, CIBERES, Barcelona, Catalonia, Spain
[3] Sanofi, Global Med Affairs, Chilly Mazarin, France
[4] Harvard Med Sch, Brigham & Womens Hosp, Div Otolaryngol Head & Neck Surg, Boston, MA USA
[5] Dusseldorf Univ Hosp UKD, Dept Otorhinolaryngol, Dusseldorf, Germany
[6] Univ Hosp Leuven, Dept Otorhinolaryngol Head & Neck Surg, Leuven, Belgium
[7] Univ Amsterdam, Dept Otorhinolaryngol, Amsterdam, Netherlands
[8] Sanofi, Hlth Econ & Value Assessment, Gentilly, France
[9] Sanofi, Hlth Econ & Value Assessment, Cambridge, MA USA
[10] Regeneron Pharmaceut Inc, Med Affairs, Tarrytown, NY USA
[11] Regeneron Pharmaceut Inc, Global Med Affairs, Uxbridge, England
[12] Sanofi, Global Med Affairs, Bridgewater, NJ USA
[13] Kings Coll London, Dept Otorhinolaryngol, London WC2R 2LS, England