1. Department of Undersea and Hyperbaric Medicine, Maritime Medical Research Center, National Maritime Medical Center, Changwon, Republic of Korea
2. Department of Internal Medicine, Seoul National University Hospital, Seoul, Republic of Korea
3. Department of Laboratory Medicine, Hallym University Sacred Heart Hospital, Anyang, Republic of Korea
4. Department of Internal Medicine and Cardiovascular Center, Heart Vascular Stroke Institute, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea