[1] Kumamoto Univ Hosp, Kumamoto, Japan
[2] Jichi Med Univ, Shimotsuke, Tochigi, Japan
[3] Kyushu Univ, Fukuoka, Japan
[4] Univ Tokyo, Tokyo, Japan
[5] Tohoku Univ, Sendai, Japan
[6] Natl Cerebral & Cardiovasc Ctr Hosp, Osaka, Japan
[7] Precis KK, Tokyo, Japan