Phase 1 study of clofarabine in pediatric patients with relapsed/refractory acute lymphoblastic leukemia in Japan

Katsuyoshi Koh, Chitose Ogawa, Yasuhiro Okamoto, Kazuko Kudo, Jiro Inagaki, Tsuyoshi Morimoto, Hideya Mizukami, Evelyne Ecstein-Fraisse, Atsushi Kikuta