1. Chemical Research and Development, SPERA PHARMA, Inc., 17-85, Jusohonmachi 2-chome, Yodogawa-ku, Osaka 532-0024, Japan
2. Department of Cardiovascular Medicine, Tohoku University Graduate School of Medicine, 1-1, Seiryo-machi, Aoba-ku, Sendai 980-0872, Japan
3. Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aza-aoba, Aramaki, Aoba-ku, Sendai 980-8578, Japan