Machine Learning and Computational Biology Lab, Department of Biosystems Science and Engineering, ETH Zurich, Switzerland, Analytical and Translational Genetics Unit, Department of Medicine, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA, Program in Medical and Population Genetics and Stanley Center for Psychiatric Research, Broad Institute of MIT and Harvard, Cambridge, MA, USA, Department of Neurology and Department of Human Genetics, Leiden University Medical Center, Leiden, The Netherlands.