1. Department of Anesthesiology and Pain Medicine, Gangneung Asan Hospital, College of Medicine, University of Ulsan, Gangwon, Republic of Korea
2. Department of Psychiatry, Yonsei University Gangnam Severance Hospital, College of Medicine, Yonsei University, Seoul, Republic of Korea
3. Department of Urology, Prostate Cancer Center, Yonsei University Gangnam Severance Hospital, College of Medicine, Yonsei University, Seoul, Republic of Korea
4. Department of Anesthesiology and Pain Medicine, Seoul National University Bundang Hospital, Seongnam, Gyeonggi, Republic of Korea
5. Institute of Behavioral Sciences in Medicine, Yonsei University Gangnam Severance Hospital, College Of Medicine, Yonsei University, Seoul, Republic of Korea