Serial phenotypic, cytogenetic and molecular genetic studies in Richter's syndrome: demonstration of lymphoma development from the chronic lymphocytic leukaemia cells

P. R K Koduru, S. M. Lichtman, T. F. Smilari, T. Sun, J. C. Goh, L. Karp, W. Hall, S. Hashimoto, N. Chiorazzi, J. D. Broome