Purine antagonists for chronic lymphocytic leukemia: Results of a comprehensive meta-analysis by Steurer, M, Pall, G, Richards, S, Schwarzer, G, Bohlius, J, Greil, R

Single-agent purine analogues for the treatment of chronic lymphocytic leukaemia: a systematic review and meta-analysis. by Steurer, M, Pall, G, Richards, S, Schwarzer, G, Bohlius, J, Greil, R

Recombinant human erythropoiesis-stimulating agents and mortality in patients with cancer: a meta-analysis of randomised trials. by Bohlius, J, Schmidlin, K, Brillant, C, Schwarzer, G, Trelle, S, Seidenfeld, J, Zwahlen, M, Clarke, M, Weingart, O, Kluge, S, Piper, M, Rades, D, Steensma, D, Djulbegovic, B, Fey, M, Ray-Coquard, I, Machtay, M, Moebus, V, Thomas, G, Untch, M, Schumacher, M, Egger, M, Engert, A