1. Department for Bioinformatics and Functional Genomics, Division of Theoretical Bioinformatics, German Cancer Research Center (DKFZ), Institute for Pharmacy and Molecular Biotechnology (IPMB) and BioQuant, Heidelberg University, Heidelberg 69120, Germany.
2. Kirchhoff Institute for Physics, Heidelberg University, Heidelberg 69120, Germany.
3. Interdisciplinary Center for Scientific Computing, Heidelberg University, Heidelberg 69120, Germany.
4. Apogenix GmbH, Heidelberg 69120, Germany.
5. Center for Cell Decision Processes, Department of Systems Biology, Harvard Medical School, Boston, MA 02115, USA.
6. Institute of Molecular Biology, Mainz 55128, Germany.