Professor Department of Medical Oncology, Sarcoma Center, West German Cancer Center, University Hospital Essen, University Duisburg-Essen, and German Cancer Consortium (DKTK), Partner Site University Hospital Essen
Assistant Research Physician Surgical Oncology Program, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
Division Head, Hematology/Oncology; Director, Kellogg Cancer Center; Clinical Professor of Medicine, University of Chicago Pritzker School of Medicine NorthShore University HealthSystem