Combretastatin-A4 prodrug induces mitotic catastrophe in chronic lymphocytic leukemia cell line independent of caspase activation and poly (ADP-ribose) polymerase cleavage - Nabha,S.M.; Mohammad,R.M.; Dandashi,M.H.; Coupaye-Gerard,B.; Aboukameel,A.; Pettit,G.R.; Al-Katib,A.M. (Clin Cancer Res, 2002)