1. Stroke Center and Department of Neurology, Tainan Sin Lau Hospital, Tainan, Taiwan
2. Stroke Center and Department of Neurology, Chang Gung Memorial Hospital, Linkou Medical Center and College of Medicine, Kueishan, Taoyuan, Taiwan
3. Department of Neurology, Chang Gung Memorial Hospital at Kaohsiung and Chang Gung University, Kaohsiung, Taiwan