Department of Anesthesiology and Pain Medicine, Gyeongsang National University Hospital, Jinju-si, Republic of Korea

Department of Anesthesiology and Pain Medicine, Gyeongsang National University, College of Medicine, Gyeongsang National University Hospital, Institute of Health Sciences, Gyeonsang National University, Jinju-si, Republic of Korea [email protected]

Conflicts of Interest and Source of Funding: The authors have no conflicts of interest to declare.