[1] Univ Oxford, Neurosci Dept, Oxford, England
[2] King Saud Bin Abdulaziz Univ Hlth Sci, Coll Med, Riyadh, Saudi Arabia
[3] King Abdullah Int Med Res Ctr, Riyadh, Saudi Arabia
[4] Minist Natl Guard Hlth Affairs, King Abdulaziz Med City, Div Neurol, Riyadh, Saudi Arabia
[5] King Faisal Specialist Hosp & Res Ctr, Jeddah, Saudi Arabia
[6] Imam Abdulrahman Bin Faisal Univ, Coll Med, Dept Neurol, Al Khobar, Saudi Arabia
[7] King Faisal Specialist Hosp & Res Ctr, Riyadh, Saudi Arabia
[8] My Clin, Jeddah, Saudi Arabia
[9] King Saud Univ, Coll Med, Riyadh, Saudi Arabia
[10] King Saud Bin Abdulaziz Univ Hlth Sci, Coll Med, Jeddah, Saudi Arabia
[11] King Abdullah Int Med Res Ctr, Jeddah, Saudi Arabia
[12] Minist Natl Guard Hlth Affairs, Dept Med, Jeddah, Saudi Arabia
[13] Johns Hopkins Med, Dammam, Saudi Arabia
[14] Novartis AG, Global Med Affairs, Basel, Switzerland
[15] Real World Evidence, Med Affairs, Novartis, Saudi Arabia
[16] Novartis Saudi Ltd, SERVCORP Laysen Valley, Bldg 13,Intersect King Khalid & Orouba Rd, Riyadh, Saudi Arabia