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1 Servei de Pneumologia, Instituto Clínico del Tórax, Hospital Clínic i Provincial de Barcelona-Institut d'Investigacions Biomèdiques August Pi i Sunyer, Universidad de Barcelona-Centro de Investigación Biomédica en Red (CIBER) de Enfermedades Respiratorias, 08036 Barcelona, Spain. atorres@ub.edu
1 Servei de Pneumologia, Instituto Clínico del Tórax, Hospital Clínic i Provincial de Barcelona-Institut d'Investigacions Biomèdiques August Pi i Sunyer, Universidad de Barcelona-Centro de Investigación Biomédica en Red (CIBER) de Enfermedades Respiratorias, 08036 Barcelona, Spain. atorres@ub.edu