Elisa Mincholé1, Rosa M Penin2,3, Antoni Rosell1,3,4,5. 1. Departments of Respiratory Medicine. 2. Pathology, Bellvitge Hospital. 3. Bellvitge Biomedical Research Institute (IDIBELL), L'Hospitalet of Llobregat. 4. CIBER of Respiratory Diseases (CIBERES), Bunyola, Mallorca, Spain. 5. University of Barcelona (UB), Faculty of Medicine, Barcelona.