Research on advanced intervention using novel bone marrOW stem cell (RAINBOW): a study protocol for a phase I, open-label, uncontrolled, dose-response trial of autologous bone marr... oleh Hideo Shichinohe, Masahito Kawabori, Hiroaki Iijima, Tuyoshi Teramoto, Takeo Abumiya, Naoki Nakayama, Ken Kazumata, Shunsuke Terasaka, Teruyo Arato, Kiyohiro Houkin