1 Department of Cardiology, Kumamoto City Hospital, 4-1-60 Higashi-Machi, Higashi-Ku, Kumamoto City, Kumamoto, 862-8505, Japan. misumi_ikuo@yahoo.co.jp.
2 Department of Nephrology, Kumamoto, City Hospital, 4-1-60 Higashi-Machi, Higashi-Ku, Kumamoto City, Kumamoto, 862-8505, Japan.
3 Department of Metabolism, Kumamoto City Hospital, 4-1-60 Higashi-Machi, Higashi-Ku, Kumamoto City, Kumamoto, 862-8505, Japan.
4 Department of Cardiology, Kumamoto City Hospital, 4-1-60 Higashi-Machi, Higashi-Ku, Kumamoto City, Kumamoto, 862-8505, Japan.
5 Department of Cardiovascular Medicine, Kumamoto University School of Medicine, 1-1-1 Honjo, Chuo-Ku, Kumamoto City, Kumamoto, 860-8556, Japan.