Department of Biosystems Science and Engineering, ETH Zürich, Swiss Institute of Bioinformatics, Basel 4058, Switzerland and.|Department of Biosystems Science and Engineering, ETH Zürich, Swiss Institute of Bioinformatics, Basel 4058, Switzerland and.|Department of Biosystems Science and Engineering, ETH Zürich, Swiss Institute of Bioinformatics, Basel 4058, Switzerland and.|Faculty of Statistics, Technische Universität Dortmund, Dortmund 44221, Germany.|Department of Biosystems Science and Engineering, ETH Zürich, Swiss Institute of Bioinformatics, Basel 4058, Switzerland and.