1. Department of Anesthesiology and Pain Medicine, School of Medicine, Konyang University, Daejeon, Korea.
2. Department of Anesthesiology and Pain Medicine, Yonsei University Wonju College of Medicine, Wonju, Korea.
3. Biology Program, Division of Life Sciences, Kangwon National University, Chuncheon, Korea.
4. Department of Thoracic and Cardiovascular Surgery, Yonsei University Wonju College of Medicine, Wonju, Korea.
5. Department of Anesthesiology and Pain Medicine, College of Medicine, Chungnam National University, Daejeon, Korea.