1. Dept of Clinical Lab Med, Kinki Univ School of Med. Osaka-Sayama 589-8511, Japan
2. Chemco Scientific Corporation Limited, Osaka 530- 0016, Japan
3. Sun Plastics Co. Ltd. Higashi-Osaka, 577-0065, Japan
4. Technochemistry Department, Osaka Municipal Technical Reserach Institute, Osaka, 536-8553, Japan
5. Tottori Univ. School of Med, Yonago 683-8503, Japan