1. Department of Anesthesiology and Pain Medicine, Korea University College of Medicine, Guro Hospital, 148 Gurodong-ro, Guro-gu, Seoul, Korea
2. Department of Anesthesiology, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 20092, China
3. Department of Physiology and Neuroscience Research Institute, Korea University College of Medicine, 126–1 Anam-dong 5-ga, Seoul, Korea