1. Department of Neurology, Tri-Service General Hospital, National Defense Medical Center, No. 325, Section 2, Cheng-Kung Road, Neihu 114, Taipei, Taiwan, Republic of China
2. Department of Emergency Medicine, Taichung Veterans General Hospital, Puli Branch, No. 1, Rongguang Road, Puli Township, Nantou County 545, Taiwan, Republic of China