1. From the Department of Emergency Medicine (Z.G., B.L., Y.C.), Laboratory of Emergency Medicine (Z.G., B.L., Y.C.), Department of Neurology (K.G., Z.H.), and National Clinical Research Center of Geriatrics (K.G., Z.H.), West China Hospital, Sichuan University; and Department of Neurology (Z.H.), Chengdu Shangjin Nanfu Hospital, Sichuan, China.