[1] Hosp Univ Marques de Valdecilla, Otolaryngol Dept, Santander 39008, Spain
[2] Valdecilla Biomed Res Inst, Santander 39008, Spain
[3] Hosp Complex Santiago de Compostela, Rhinol & Sleep Apnea Unit, Otolaryngol, Santiago de Compostela 15700, Spain
[4] Univ Hosp Virgen Macarena, Otorhinolaryngol Head & Neck Surg Dept, Rhinol Unit, Seville 41009, Spain
[5] Western Univ, Dept Otolaryngol Head & Neck Surg, London, ON N6A 3K7, Canada
[6] Udine Univ Hosp, Azienda Sanitaria Univ Friuli Cent, Dept Otorhinolaryngol, I-33100 Udine, Italy
[7] Univ Milan, Santi Paolo & Carlo Hosp, Dept Hlth Sci, AMS Otolaryngol Unit, I-20142 Milan, Italy
[8] Deusto Univ, Donostia Univ Hosp, Bidonostia Res Inst, Fac Med, San Sebastian 20014, Spain
[9] Cairo Univ, Kasr Alainy Sch Med, Otorhinolaryngol Head & Neck Surg Dept, Cairo 4240310, Egypt
[10] Univ Ostrava, Fac Med, Otorhinolaryngol Head & Neck Surg Dept, Ostrava 70103, Czech Republic
[11] Jerez Univ Hosp, Otorhinolaryngol Dept, Jerez de la Frontera 11407, Spain
[12] Univ Adelaide, Dept Otolaryngol Head & Neck Surg, Adelaide 5005, Australia
[13] Madras ENT Res Fdn, Dept Otorhinolaryngol, Raja Annamalai Puram, Chennai 600028, Tamil Nadu, India
[14] Young Otolaryngologists Int Federat Otorhinol Soc, F-75000 Paris, France
[15] Paris Saclay Univ, Foch Hosp, Dept Head & Neck Surg, F-91190 Paris, France
[16] Univ Enna Kore, Dept Med & Surg, I-94100 Enna, Italy
[17] Barcelona Univ, Hosp Clin, Otorhinolaryngol Head & Neck Surg Dept, Rhinol & Skull Base Surg Unit,IDIBAPS,CIPERES, Barcelona 08007, Spain
[18] Ctr Med Teknon, Unidad Alergo Rino, Barcelona 08007, Spain