1 Emergency Life Saving and Technique Tokyo, 4-5 Minamiosawa, Hachioji, Tokyo 192-0364, Japan. Electronic address: kminami@med.uoeh-u.ac.jp.
2 New Products Development Office, New Business Research and Development Laboratories, Research and Development Headquarters, SUMITOMO RIKO Company Limited, Komaki-shi, Aichi, Japan.