Proliferation centers in chronic lymphocytic leukemia: correlation with cytogenetic and clinicobiological features in consecutive patients analyzed on tissue microarrays. - Ciccone, M; Agostinelli, C; Rigolin, G M; Piccaluga, P P; Cavazzini, F; Righi, S; Sista, M T; Sofritti, O; Rizzotto, L; Sabattini, E; Fioritoni, G; Falorio, S; et al. (Leukemia (08876924), 2012)