1. Young Otolaryngologists–International Federation of Otorhinolaryngological Societies Paris France
2. Department of Medical, Surgical Sciences and Advanced Technologies G.F. Ingrassia University of Catania Catania Italy
3. Service of Otolaryngology, Rhinology Unit Hospital Complex at the University of Santiago de Compostela Santiago de Compostela Spain
4. Otolaryngology Unit Morgagni Pierantoni Hospital Forlì Italy
5. Department of Pediatrics Hospital Complex at the University of Santiago de Compostela Santiago de Compostela Spain
6. Allergy Department Hospital Complex at the University of Santiago de Compostela Santiago de Compostela Spain
7. Otorhinolaryngology Department Sapienza University of Rome Rome Italy
8. Service of Otolaryngology, Pediatric Otolaryngology Unit Gregorio Marañon University Hospital Madrid Spain
9. Department of Human Anatomy and Experimental Oncology, Faculty of Medicine, UMONS Research Institute for Health Sciences and Technology University of Mons Mons Belgium
10. The Liverpool Head and Neck Centre Aintree University Hospital NHS Foundation Trust Liverpool UK
11. Otolaryngology Service Hospital Universitario Marqués de Valdecilla Santander Spain
12. Otolaryngology Service Hospital Universitario Virgen Macarena Sevilla Spain
13. Department of Pediatric Otolaryngology‐Head and Neck Surgery, Children's Health Children's Medical Center Dallas Dallas Texas U.S.A.
14. Department of Otolaryngology‐Head & Neck Surgery Western University London Ontario Canada
15. Department of Otorhinolaryngology and Head and Neck Surgery, APHM, IUSTI, CNRS, La Conception University Hospital Aix Marseille University Marseille France
16. Otolaryngology Service, Université Paris Cité, Hôpital Necker‐Enfants Malades APHP Paris France
17. Pediatric Otolaryngology Department Robert‐Debré Hospital, Paris 7 Denis Diderot University Paris France
18. Otolaryngology Unit, ASST Santi Paolo E Carlo, Department of Health Sciences Università Degli Studi Di Milano Milan Italy