1. Department of Pathology; Osaka Medical College; 2-7 Daigaku-cho, Takatsuki Osaka Japan
2. Department of Pathology; Moriguchi Keijinkai Hospital; 2-47-12, Yagumohigashi-machi Moriguchi, Osaka, 570-0021 Japan
3. Department of Internal Medicine; Moriguchi Keijinkai Hospital; 2-47-12, Yagumohigashi-machi Moriguchi, Osaka, 570-0021 Japan
4. Department of Nephrology and Dialysis; Moriguchi Keijinkai Hospital; 2-47-12, Yagumohigashi-machi Moriguchi, Osaka, 570-0021 Japan
5. Department of Pathology; Kawasaki Medical School; 577 Matsushima, Kurashiki-city Okayama 701-0192 Japan