1. Department of Physical Therapy, University of Murcia, Murcia, Spain
2. Research Group Fisioterapia y Discapacidad, Instituto Murciano de Investigación Biosanitaria (IMIB), Murcia, Spain
3. Department of Pneumology, Hospital General Universitario Morales Meseguer, Murcia, Spain
4. Department of Internal Medicine, University of Murcia, Murcia, Spain