1. Department of Hematology and Stem Cell Transplantation, West German Cancer Center University Hospital Essen, University of Duisburg‐Essen Essen Germany
2. EpidStrategies Rockville Maryland USA
3. EpidStrategies Ann Arbor Michigan USA
4. Sanofi Cambridge Massachusetts USA
5. Division of Hematology MedStar Georgetown University Hospital Washington District of Columbia USA