1. Department of Vertebrate Genomics, Max Planck Institute for Molecular Genetics, Ihnestrasse 73, 14195 Berlin, Germany.
2. Department of Computational Molecular Biology, Max Planck Institute for Molecular Genetics, Ihnestrasse 73, 14195 Berlin, Germany.
3. International Max Planck Research School for Computational Biology and Scientific Computing.
4. Genomatix Software Gmbh, Bayerstrasse 85a, 80335 Munich, Germany.