A phase II study of sequential combination chemotherapy with cyclophosphamide, prednisone, and 2-chlorodeoxyadenosine in previously untreated patients with chronic lymphocytic leukemia. - Tefferi, A; Li, C-Y; Reeder, C B; Geyer, S M; Allmer, C; Levitt, R; Michalak, J C; Addo, F; Krook, J E; Witzig, T E; Schaefer, P L; Mailliard, J A (Leukemia (08876924), 2001)