1. Department of Laboratory Medicine, Chonnam National University Hospital, Gwangju, Korea
2. Department of Laboratory Medicine and Genetics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
3. Department of Trauma Surgery, Seoul National University Hospital, Seoul, Korea
4. Department of Anesthesiology and Pain Medicine, Konkuk University Medical Center, Konkuk University School of Medicine, Seoul, Korea