1. Clinical Neuroscience Laboratory, Faculty of Medicine and Pharmacy, Sidi Mohammed Ben Abdallah University, Fez, Morocco
2. Department of Physical and Rehabilitation Medicine, Hassan II University Hospital, Fez, Morocco
3. Laboratory of Epidemiology, Clinical Research and Public Health, University Mohammed Premier, Oujda, Morocco
4. Laboratory of Epidemiology, Clinical Research and Public Health, Faculty of Medicine and Pharmacy, Sidi Mohammed Ben Abdallah University, Fez, Morocco
5. Swiss Paraplegic Research, Guido A. Zäch Institute, Nottwil, Switzerland
6. Department of Health Sciences and Medicine, University of Lucerne, Lucerne, Switzerland