1. Department of Evolutionary Biology and Environmental Studies; University of Zurich; Zurich Switzerland
2. Swiss Institute of Bioinformatics; Lausanne Switzerland
3. Current Address: Department of Biology, Stanford University, Stanford; CA, USA; Department of Chemical and Systems Biology, Stanford University; Stanford CA USA
4. Institute of Information and Communication Technologies, Electronics and Applied Mathematics; Université Catholique de Louvain; Louvain-la-Neuve Belgium
5. Namur Center for Complex Systems; University of Namur; Namur Belgium
6. Institute for Complex Systems Simulation, Department of Electronics and Computer Science; University of Southampton; Southampton United Kingdom
7. The Santa Fe Institute; Santa Fe New Mexico USA
8. Institute for Integrative Biology, ETH; Zurich Switzerland