Javier de Miguel-Díez, Respiratory Department, Hospital General Universitario Gregorio Marañón, Madrid, Spain; Instituto de Investigación Sanitaria Gregorio Marañón, Universidad Complutense de Madrid, Madrid, Spain; CIBER Enfermedades Respiratorias (CIBERES), Madrid, Spain
Alberto García-Ortega, Respiratory Department, Hospital Universitario Doctor Peset, Valencia, Spain; Foundation for the Promotion of Health and Biomedical Research in the Valencian Region (FISABIO), Valencia, Spain
Manuel Monreal, CIBER Enfermedades Respiratorias (CIBERES), Madrid, Spain;; Faculty of Health Sciences, UCAM-Universidad Católica San Antonio de Murcia, Murcia, Spain