1. Department of Allergy, La Paz University Hospital, Madrid, Spain
2. IdiPAZ, Hospital La Paz Institute for Health Research, Madrid, Spain
3. CIBERES, CIBER of Respiratory Diseases, Madrid, Spain
4. Department of Pulmonology, La Paz University Hospital, Madrid, Spain
5. Department of Pharmacy, La Paz University Hospital, Madrid, Spain
6. Department of Biostatistics, La Paz University Hospital, Madrid, Spain