1. Wellcome Trust Sanger Institute, Hinxton CB10 1SA, Cambridgeshire, UK
2. Comparative Genomics Lab, Instituto de Biologica Evolutiva, Universitat Pompeu Fabra, Barcelona, Spain
3. MIT Computer Science and Artificial Intelligence Laboratory, Cambridge, MA and Broad Institute of MIT and Harvard, Cambridge, MA, USA
4. Bioinformatics Unit, Spanish National Cancer Research Centre, Madrid, Spain
5. Computational Biology Life Sciences Group, Barcelona Supercomputing Center, Barcelona, Spain
6. Cardiovascular Proteomics Laboratory, Centro Nacional de Investigaciones Cardiovasculares, Madrid, Spain