Injung Sohn¹,Jooyoung Oh¹,Cheung Soo Shin²,Se Hee Na²,Hyung-Jun Yoon¹,Jin Young Park¹ (1.Department of Psychiatry, Yonsei University College of Medicine, Gangnam Severance Hospital, Seoul, Korea 2.Department of Anesthesiology, Yonsei University College of Medicine, Gangnam Severance Hospital, Seoul, Korea)

Shigeaki Inoue¹,Eduard E. Vasilevskis²,Pratik P. Pandharipande³,Timothy D. Girard⁴,Amy J. Graves⁵,Jennifer Thompson⁵,Ayumi Shintani⁵,Wesley E. Ely⁴,Sadaki Inokuchi¹ (1.Department of Emergency and Critical Care Medicine, Tokai University School of Medicine, Japan 2.Division of General Internal Medicine and Public Health, Department of Medicine, Vanderbilt University School of Medicine, Nashville, TN USA 3.Department of Anesthesiology, Vanderbilt University School of Medicine, Nashville, TN USA 4.Division of Allergy/Pulmonary/Critical Care Medicine, Department of Medicine, Vanderbilt University School of Medicine, Nashville, TN USA 5.Department of Biostatistics, Vanderbilt University School of Medicine, Nashville, TN USA)

Jooyoung Oh¹,Jung-Hyun Sohn¹,Cheung Soo Shin²,Se Hee Na²,Hyung-Jun Yoon¹,Jin Young Park¹ (1.Department of Psychiatry, Yonsei University College of Medicine, Gangnam Severance Hospital, Seoul, Korea 2.Department of Anesthesiology, Yonsei University College of Medicine, Gangnam Severance Hospital, Seoul, Korea)

Takao Yano,Shin Onizuka (Department of Anesthesiology, Miyazaki Prefectural Nobeoka Hospital, Japan)

Sungwon Na (Department of Anesthesiology and Pain Medicine, Yonsei University College of Medicine, Korea)