We would like to correct the second name of 3rd author as written below. The change is underlined.
The authors sincerely regret this error.
Jang-Eun Cho,1 Jae-Kwang Shim,2 Jong-Wook Song,2 Hye-Won Lee,1 Dong-Hwan Kim,1 and Young-Lan Kwak2
1Department of Anesthesiology and Pain Medicine, Anam Hospital, Korea University, Seoul; 2Department of Anesthesiology and Pain Medicine and Anesthesia and Pain Research Institute, Severance Biomedical Science Institute, Yonsei University College of Medicine, Seoul, Korea.