1. Max-Delbrück-Center for Molecular Medicine, 13125 Berlin, Germany
2. Experimental and Clinical Research Center, Charité University Medicine, Max-Delbrück-Center for Molecular Medicine, 13125 Berlin, Germany
3. SAIC-Frederick, National Cancer Institute at Frederick, Frederick, MD 21702
4. Charité Comprehensive Cancer Center, Charité University Medicine, 10117 Berlin, Germany
5. Screening Technologies Branch, Developmental Therapeutics Program, Division of Cancer Treatment and Diagnosis, National Cancer Institute at Frederick, Frederick, MD 21702