1. School of Pharmacy, Shujitsu University, Naka-ku, Okayama-shi, Okayama-ken, Japan
2. Ina Research Inc., Ina-shi, Nagano-ken, Japan
3. Tokushima Research Institute, Otsuka Pharmaceutical Co, Ltd, Tokushima-shi, Tokushima-ken, Japan
4. Safety Studies Section, BML Inc, Kawagoe-shi, Saitama-ken, Japan