1 Faculty of Medicine, Department of Community Medicine and Rehabilitation, Section of Physiotherapy, Umeå University, Umeå, Sweden.
2 Lab 3R - Respiratory Research and Rehabilitation Laboratory, School of Health Sciences (ESSUA) and Institute of Biomedicine (iBiMED), University of Aveiro, Aveiro, Portugal.
3 School of Rehabilitation Science, McMaster University, Hamilton, ON, Canada.
4 Department of Community Medicine, Information and Health Decision Sciences, CINTESIS@RISE, MEDCIDS, Faculty of Medicine of the University of Porto, Porto, Portugal.