1. German Research Centre for Biotechnology, Department of Applied Genetics, Braunschweig, Germany
2. Division of Microbiology, Braunschweig, Germany
3. Department of Biochemical Engineering, Braunschweig, Germany
4. DKFZ, Institute of Cellular and Molecular Pathology, Heidelberg, Germany
5. Ulm University Medical Center, Department of Internal Medicine II, Ulm, Germany; Weizmann Institute of Science, Rehovot, Israel
6. Department of Immunology, Rehovot, Israel
7. Department of Molecular Cell Biology, Rehovot, Israel
8. Department of Gene Regulation and Differentiation, Braunschweig, Germany