1 Department of Laboratory Medicine, Saitama Medical University Hospital, 38 Morohongo, Moroyama-machi, Irumagun, Saitama, 350-0495, Japan. k_nomura@saitama-med.ac.jp.
2 Department of Laboratory Medicine, Saitama Medical University Hospital, 38 Morohongo, Moroyama-machi, Irumagun, Saitama, 350-0495, Japan.
3 Department of Cardiology, Saitama Medical University International Medical Center, 1397-1 Yamane, Hidaka City, Saitama, 350-1298, Japan.
4 Cardiovascular Medicine, Saitama Medical University Hospital, 38 Morohongo, Moroyama-machi, Irumagun, Saitama, 350‑0495, Japan.