[1] NAGOYA UNIV,SCH MED,DEPT BIOCHEM,NAGOYA,AICHI 464,JAPAN
[2] NAGOYA UNIV,BRANCH HOSP,DEPT INTERNAL MED,NAGOYA,AICHI 464,JAPAN
[3] MEIJO UNIV,FAC PHARM,NAGOYA,AICHI 468,JAPAN
[4] JICHI MED SCH,DEPT NEUROL,MINAMI KAWACHI,TOCHIGI 32904,JAPAN
[5] FARMITALIA CARLO ERBA SPA,RES & DEV,MILAN,ITALY
[6] NAGOYA INST TECHNOL,DEPT BIOSCI,NAGOYA,AICHI 466,JAPAN