1. Systems Biology Program, Centro Nacional de Biotecnología CSIC, Campus de la Universidad Autónoma de Madrid, 28049 Spain
2. School of Computing, Newcastle University NE4 5TG, UK
3. Raytheon BBN Technologies, Arlington, VA 22209, USA
4. Scienseed SL, 28020 Madrid, Spain
5. Doulix-Explora Srl, Via G. Peroni 386, 00131, Italy