Dirk Winkler, Christof Schneider, Manuela Zucknick, Daniela Bögelein, Kerstin Schulze, Thorsten Zenz, Julia Mohr, Angela Philippen, Henriette Huber, Andreas Bühler, Annett Habermann, Axel Benner, Hartmut Döhner, Stephan Stilgenbauer, Daniel Mertens. Protein expression analysis of chronic lymphocytic leukemia defines the effect of genetic aberrations and uncovers a correlation of CDK4, P27 and P53 with hierarchical risk. Haematologica 2010;95(11):1880-1888; https://doi.org/10.3324/haematol.2010.025734.