Validation of ZAP-70 methylation and its relative significance in predicting outcome in chronic lymphocytic leukemia. - Claus, Rainer; Lucas, David M.; Ruppert, Amy S.; Williams, Katie E.; Daniel Weng; Patterson, Kara; Zucknick, Manuela; Oakes, Christopher C.; Rassenti, Laura Z.; Greaves, Andrew W.; Geyer, Susan; Wierda, William G.; et al. (Blood, 2014)