1. Department of Hematology and Oncology, Georg-August-University, Goettingen, Germany;
2. Dana-Farber Cancer Institute, Boston, MA;
3. Max-Planck Institute for Biophysical Chemistry, Goettingen, Germany;
4. Institute for Medical Informatics, Statistics and Epidemiology, Leipzig, Germany;
5. Functional Genomics Center Zurich, Zurich, Switzerland; and
6. Pathology, Hematopathology Section and Lymph Node Registry, Kiel, Germany