1 Department of Anesthesiology and Pain Medicine, Gyeongsang National University Changwon Hospital, Changwon-si, Republic of Korea.
2 Department of Anesthesiology and Pain Medicine, Gyeongsang National University College of Medicine, Jinju-si, Republic of Korea.
3 Department of Chemistry, University of Helsinki, Helsinki, Finland.
4 Department of Anesthesiology and Pain Medicine, Gyeongsang National University College of Medicine, Gyeongsang National University Hospital, Jinju, Republic of Korea.
5 Institute of Medical Science, Gyeongsang National University, Jinju, Republic of Korea.