1. Investigational Unit; Hospital Medica Sur; Mexicocity Mexico
2. Servicio de Enfermedades del Sistema Inmune-Alergia; Hospital Universitario Príncipe de Asturias; Alcalá de Henares Spain
3. Departamento de Medicina y Especialidades Médicas; Universidad de Alcalá; Madrid Spain
4. Hospital Italiano de Buenos Aires; Buenos Aires Argentina
5. Royal Liverpool University Hospital and Liverpool Hope University; Liverpool United Kingdom
6. Universidad de Guadalajara; Guadalajara Mexico
7. Hannover Medical School; Hannover Germany
8. University Hospital of Salamanca; Salamanca Spain
9. Fundación Ayre (Education & Research); Salta Argentina
10. Red Cross Children's Hospital and School of Adolescent and Child Health; University of Cape Town; Cape Town South Africa
11. Universidad de Hidalgo; Pachuca Mexico
12. Center for Rhinology and Allergology; Wiesbaden Germany
13. Universidade Federal do Paraná; Curitiba Brazil
14. Padua University; Padua Italy
15. Department of Allergy & Clinical Immunology; Transylvania University; Brasov Romania
16. MACVIA-France; Contre les MAladies Chroniques pour un VIeillissement Actif en France European Innovation Partnership on Active and Healthy Ageing Reference Site; Montpellier France
17. Asthma UK Centre for Applied Research; Usher Institute of Population Health Sciences and Informatics; The University of Edinburgh; Scotland UK
18. Department of Otorhinolaryngology, Head and Neck Surgery; Universitätsmedizin Mannheim; Medical Faculty Mannheim; Heidelberg University; Mannheim Germany