1. INGENIO Immunoal·lèrgia Respiratòria Clínica i Experimental (IRCE) Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS) Universitat de Barcelona Barcelona Spain
2. CIBER of Respiratory Diseases (CIBERES) Carlos III Institute Barcelona Spain
3. Department of Otolaryngology Head and Neck Surgery Tongji HospitalTongji Medical CollegeHuazhong University of Science and Technology Wuhan China
4. Department of Otolaryngology Yong Loo Lin School of MedicineNational University of SingaporeNational University Health System Singapore Singapore
5. ENT Department Rhinology Unit & Smell Clinic Hospital Clínic de BarcelonaUniversitat de Barcelona Barcelona Spain