1. Shiseido Research Center, Hayabuchi, Tsuzuki-Ku, Yokohama, Kanagawa, Japan
2. Graduate School of Biomedical Engineering, Tohoku University, Miyagi, Japan
3. Graduate School of Engineering, Tohoku University, Miyagi, Japan
4. Ofuna Plant, Denki Kagaku Kogyo Kabushiki Kaisha, Dai, Kamakura, Kanagawa, Japan