1. German Cancer Consortium (DKTK), OncoRay - National Center for Radiation Research in Oncology, Medical Faculty and University Hospital Carl Gustav Carus, Technische Universität Dresden, Fetscherstrasse 74, 01307 Dresden, Germany
2. German Cancer Research Center (DKFZ), Im Neuenheimer Feld 280, 69120 Heidelberg, Germany
3. Computational Biology and Bioinformatics, Pacific Northwest National Laboratory, Richland, WA, USA
4. Molecular and Cellular Biology Program, Oregon State University, Corvallis, OR, USA
5. Systems Toxicology, Pacific Northwest National Laboratory, P.O. Box 999, MS J4-02, Richland, WA 99352, USA. Fax: +1 509-371-7304; Tel: +1 509-371-6898