Makoto Akimoto1, Kazue Nakamura2. 1. Clinical Planning Department I, Ikuyaku. Integrated Value Development Division, Mitsubishi Tanabe Pharma Corporation, Tokyo 103-8405, Japan. Electronic address: akimoto.makoto@mc.mt-pharma.co.jp. 2. Clinical Planning Department I, Ikuyaku. Integrated Value Development Division, Mitsubishi Tanabe Pharma Corporation, Tokyo 103-8405, Japan.