1. Department of Physical Medicine and Rehabilitation, Hospitals Del Mar I L’Esperança, Parc de Salut Mar, Barcelona, Spain
2. Rehabilitation Research Group, Institut Hospital Del Mar D’Investigacions Mediques (IMIM), Barcelona, Spain
3. Department of Medicine, Universitat Autònoma de Barcelona, Barcelona, Spain
4. Department of Applied Medical Sciences, An-Najah National University, Nablus, Palestine