1. Department of Thoracic Surgery, Bellvitge University Hospital, 08907 Barcelona, Spain
2. Department of Thoracic Surgery and Lung Transplantation, University Hospital Reina Sofía, 14004 Córdoba, Spain
3. Department of Pulmonology and Lung Transplantation, University Hospital Reina Sofía, 14004 Córdoba, Spain
4. Department of Pathology and Experimental Therapeutics, University of Barcelona, 08036 Barcelona, Spain