Kawasaki Medical School Hospital, Kurashiki, Okayama, Japan
Tohoku University Hospital, Sendai, Miyagi, Japan
Nihon University Hospital, Chiyoda-ku, Tokyo, Japan
Spinal Injuries Center, Iizuka, Fukuoka, Japan
Hokkaido Spinal Cord Injury Center, Bibai, Hokkaido, Japan
Japanese Red Cross Kobe Hospital, Kobe, Hyogo, Japan
Spinal Injuries Center, Iizuka, Fukuoka, Japan
Hokkaido Chuo Rosai Hospital Sekison Center, Bibai, Hokkaido, Japan