1. Modality Research Laboratories Daiichi Sankyo Co., Ltd. 1-2-58, Hiromachi, Shinagawa-ku, Tokyo 140-8710, Japan
2. Medical Science Department Daiichi Sankyo Co., Ltd. 3-5-1, Nihonbashi Honcho, Chuo-ku, Tokyo 103-8426, Japan
3. Graduate School of Pharmaceutical Sciences, Meiji Pharmaceutical University 2-522-1 Noshio, Kiyose, Tokyo 204-8588, Japan