Monitoring MRD with flow cytometry: an effective method to predict relapse for ALL patients after allogeneic hematopoietic stem cell transplantation. - Zhao, Xiao-Su; Liu, Yan-Rong; Zhu, Hong-Hu; Xu, Lan-Ping; Liu, Dai-Hong; Liu, Kai-Yan; Huang, Xiao-Jun (Annals of Hematology, 2012)