[1] Leibniz Univ Hannover, Ctr Hlth Econ, Hannover, Germany
[2] Celgene GmbH, Munich, Germany
[3] Innovat Oncol Res & Consulting GmbH, Hamburg, Germany
[4] Univ Dusseldorf, Ctr Haematol & Oncol, Dept Hematol Oncol & Clin Immunol, D-4000 Dusseldorf, Germany