1. Faculty of Medicine; University of Sfax; Sfax Tunisia
2. Department of Respiratory Medicine; Hedi Chaker University Hospital, University of Sfax; Sfax Tunisia
3. Department of Health Research Methods, Evidence and Impact; McMaster University; Hamilton Canada
4. Hull York Medical School; University of Hull; Hull UK
5. Department of Rehabilitation Sciences, Faculty of Movement and Rehabilitation Sciences; University Hospitals Leuven; Leuven Belgium
6. Centre of Biotechnology of Sfax; University of Sfax; Sfax Tunisia