1. Department of Anaesthesiology; School of Medicine; College of Medicine; Taipei Medical University; Taipei Taiwan
2. Department of Anaesthesiology; Shuang Ho Hospital; Taipei Medical University; New Taipei City Taiwan
3. School of Chinese Medicine; College of Chinese Medicine; China Medical University; Taichung Taiwan
4. Department of Anaesthesiology; Taipei Medical University Hospital; Taipei Taiwan
5. Department of Surgery; China Medical University Hospital; Taichung Taiwan
6. Department of Surgery; University of Illinois; Chicago United States of America
7. Department of Neurology; Shuang Ho Hospital; Taipei Medical University; New Taipei City Taiwan