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[1]
Servei de Pneumologia, Institut Clínic Respiratori, Hospital Clinic de Barcelona, Universitat de Barcelona, Spain; Institut d’Investigacions Biomédiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain.
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[2]
Servei de Pneumologia, Institut Clínic Respiratori, Hospital Clinic de Barcelona, Universitat de Barcelona, Spain; Institut d’Investigacions Biomédiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain; Biomedical Research Network in Respiratory Diseases (CIBERES), Madrid, Spain.
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[3]
Servei de Pneumologia, Institut Clínic Respiratori, Hospital Clinic de Barcelona, Universitat de Barcelona, Spain; Department of Physical Therapy, Faculty of Medicine, University of Chile, Santiago, Chile.
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[4]
Servei de Pneumologia, Institut Clínic Respiratori, Hospital Clinic de Barcelona, Universitat de Barcelona, Spain; Biomedical Research Network in Respiratory Diseases (CIBERES), Madrid, Spain.