1. Department of Respiratory Medicine, Muscle and Respiratory System Research Unit (URMAR), Institute of Medical Research of Hospital del Mar (IMIM)-Hospital del Mar, Barcelona, Spain
2. Department of Health Sciences (CEXS), Universitat Pompeu Fabra, Barcelona, Spain
3. Centro de Investigación en Red de Enfermedades Respiratorias (CIBERES), Instituto de Salud Carlos III (ISCIII), Barcelona, Spain