1. From the Department of Neurology, Minhang Branch, Zhongshan Hospital, Fudan University, Shanghai, China (J.Z.)
2. Department of Anesthesiology and Critical Care, University of Pennsylvania Perelman School of Medicine, Philadelphia (M.F.E., R.L.)
3. Center of Emergency Medicine Research (W.-Z.S.) and Department of Anesthesiology (W.-Z.S.), National Taiwan University Medical School, Taiwan.