1. Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Anesthesiology and Pain Medicine, Seocho-gu, Seoul, Korea (The Republic Of)
2. Yeouido St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Anesthesiology and Pain Medicine, Seocho-gu, Seoul, Korea (The Republic Of)
3. Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Surgery, Seocho-gu, Seoul, Korea (The Republic Of)