1. Department of Anesthesiology and Pain Medicine, Chungnam National University College of Medicine, Daejeon 35015, Republic of Korea
2. Department of Anesthesiology and Pain Medicine, Chungnam National University Sejong Hospital, Sejong 30099, Republic of Korea
3. Research Institute for Medical Sciences, Chungnam National University, Daejeon 35015, Republic of Korea
4. Department of Anesthesiology and Pain Medicine, Chungnam National University Hospital, Daejeon 35015, Republic of Korea
5. Department of Surgery, 1000 Bedded Naypyitaw General Hospital, Naypyitaw 15011, Myanmar
6. Department of Pathology, Chungnam National University, Daejeon 35015, Republic of Korea