1. Hariri School of Nursing, American University of Beirut, Lebanon
2. Nehme and Therese Tohme Multiple Sclerosis Center, American University of Beirut Medical Center, Lebanon
3. Neurology Department, King Faisal Specialist Hospital and Research Center, Saudi Arabia
4. Clinical Research Institute, American University of Beirut Medical Center, Lebanon
5. The first two authors contributed equally to the manuscript.