1. Department of Anesthesiology and Pain Medicine, Gyeongsang National University School of Medicine, Jinju, Korea.
2. Department of Anesthesiology and Pain Medicine, Gyeongsang National University Hospital, Jinju, Korea.
3. Department of Oral and Maxillofacial Surgery, Gyeongsang National University Hospital, Jinju, Korea.
4. Department of Anesthesiology and Pain Medicine, Institute of Health Sciences, Gyeongsang National University School of Medicine, Jinju, Korea.