Southern Medical University - Department of Neurology, Southern Medical University - Department of Neurology, Southern Medical University - Department of Neurology, Southern Medical University - Department of Neurology, Southern Medical University - Department of Neurology, National University of Singapore (NUS) - Singapore General Hospital, National University of Singapore (NUS) - Department of Neurology, University of Wollongong, University of Wollongong, University of North Texas - Health Science Center, Southern Medical University - Department of Neurology, National Taiwan University Hospital - Department of Neurology, Chang Gung University, Southern Medical University, King's College Hospital, National University of Singapore (NUS) - Department of Neurology, King's College Hospital, National University of Singapore (NUS) - Department of Neurology and Southern Medical University - Department of Neurology