Javier Álvarez-Albarrán, Department of Pneumology, University Hospital of Burgos, Burgos, Spain
Jorge Mora-Pinilla, Department of Pneumology, University Hospital of Getafe, Getafe, Madrid, Spain
Fernando García-Prieto, Department of Pneumology, University Hospital of Getafe, Getafe, Madrid; Biomedicine and Health Sciences, European University of Madrid, Madrid. Spain
