1. Department of Pathobiochemistry, Faculty of Pharmacy, Meijo University, Tempaku-ku, Nagoya 468-8503, Japan
2. Department of Clinical Laboratory, Osaka Medical Center for Cancer and Cardiovascular Diseases, Higashinari-ku, Osaka 537-8511, Japan
3. Department of Laboratory Medicine and Clinical Laboratory Center, Gunma University School of Medicine, Maebashi 371-8511, Japan
4. Research and Development Division, Pharmaceutical Group, Nippon Kayaku Co., Ltd., Chiyoda-ku, Tokyo 102-8172, Japan