Affiliation: | a Hospital Universitario Miguel Servet, Instituto Aragones Ciencias Salud & CIBERES, Zaragoza, Spain b Bay Pines VA Health Care System, USA c Departamento de Enfermedades Respiratorias, Pontificia Universidad Católica de Chile, Chile d Hospital Universitario Nuestra señora de la Candelaria, Spain e Universidad de Montevideo, Uruguay f St Elizabeth’s Medical Center, Harvard Medical School, Boston, USA g Brigham and Women’s Hospital, Harvard Medical School, Boston, USA |