Cooper TM, Razzouk BI, Gerbing R, Alonzo TA, Adlard K, Raetz E, Gamis AS, Perentesis J, Whitlock JA. Phase I/II trial of clofarabine and cytarabine in children with relapsed/refractory acute lymphoblastic leukemia (AAML0523): a report from the Children's Oncology Group. Pediatr Blood Cancer. 2013 Jul; 60(7):1141-7.