1. Pneumology Service, Lucus Augusti University Hospital, Eoxi Lugo, Cervo y Monforte, Lugo, Spain
2. Pneumology Service, Hospital Universitario de La Ribera, Alzira, Spain
3. Medical Affairs Department, Novartis Farmacéutica, Barcelona, Spain
4. Allergy Department, Hospital La Paz Institute for Health Research, Madrid, Spain
5. Respiratory Disease Network Biomedical Research Centre (CIBERES), Spain