The Microsoft Research, University of Trento Centre for Computational and Systems Biology, Piazza Manci 17, 38123 Povo, Trento, Italy. mazza@cosbi.eu|The Microsoft Research, University of Trento Centre for Computational and Systems Biology, Piazza Manci 17, 38123 Povo, Trento, Italy. mazza@cosbi.eu|The Microsoft Research, University of Trento Centre for Computational and Systems Biology, Piazza Manci 17, 38123 Povo, Trento, Italy. mazza@cosbi.eu