1. Department of Rehabilitation Medicine, Faculty of Medicine, Chulalongkorn University, King Chulalongkorn Memorial Hospital, Rama 4 Road, Patumwan, Bangkok 10330, Thailand
2. Principles and Practice of Clinical Research (PPCR) Program, Harvard T.H. Chan School of Public Health, Boston, MA 02115, USA
3. Neurological Institute of Thailand, Department of Medical Services, Ministry of Public Health, Bangkok 10400, Thailand
4. Department of Physical Medicine & Rehabilitation, Chang Gung Memorial Hospital at Linkou, College of Medicine, Chang Gung University, Guishan District, Taoyuan City 33343, Taiwan
5. Department of Neurology, Icahn School of Medicine at Mount Sinai, New York City, NY 10029, USA