[1] Iwate Med Univ, Yahaba, Iwate, Japan
[2] Natl Cerebral & Cardiovasc Ctr, Suita, Osaka, Japan
[3] Univ Miyazaki Hosp, Miyazaki, Japan
[4] Saga Ken Med Ctr Koseikan, Saga, Japan
[5] Kawasaki Med Sch, Kurashiki, Okayama, Japan
[6] Saiseikai Yokohamashi Tobu Hosp, Yokohama, Kanagawa, Japan
[7] Ichikawa Gen Hosp, Tokyo Dent Coll, Ichikawa, Japan
[8] Kohnan Hosp, Sendai, Miyagi, Japan
[9] Kokura Mem Hosp, Kitakyushu, Fukuoka, Japan
[10] Yoshida Hosp, Cerebrovasc Res Inst, Kobe, Hyogo, Japan
[11] Suwa Redcross Hosp, Suwa, Japan
[12] Nakamura Mem Hosp, Sapporo, Hokkaido, Japan
[13] ISEIKAI Int Gen Hosp, Osaka, Japan