1. Department of Intensive Care Unit, Sun Yat-Sen Memorial Hospital; Sun Yat-Sen University; Guang Zhou China
2. Institute of Cardiopulmonary Cerebral Resuscitation; Sun Yat-Sen University; Guang Zhou China
3. Department of Emergency Medicine; First People's Hospital of Fo Shan; Fo Shan China
4. Department of Neurology, Sun Yat-Sen Memorial Hospital; Sun Yat-Sen University; Guang Zhou China
5. Department of Emergency Medicine, Sun Yat-Sen Memorial Hospital; Sun Yat-Sen University; Guang Zhou China