1. Division of Clinical Pathology, Niigata University Faculty of Medicine, Niigata, Japan
2. Department of Pathology, Tachikawa General Hospital, Nagaoka, Niigata, Japan
3. Robert J. Tomsich Pathology and Laboratory Medicine Institute, Cleveland Clinic, Cleveland, USA, OH
4. Department of Cardiovascular Surgery, Tachikawa General Hospital, Nagaoka, Niigata, Japan
5. Department of Nephrology, Tachikawa General Hospital, Nagaoka, Niigata, Japan