1. Molecular and Behavioral Neuroscience Institute, University of Michigan, Ann Arbor, MI 48109, USA.
2. Howard Hughes Medical Institute, Janelia Farms Research Campus, Ashburn, VA 20147, USA.
3. Department of Neuroscience and Howard Hughes Medical Institute, Columbia University, New York, NY 10032, USA.
4. Virginia Institute for Psychiatric and Behavioral Genetics, Virginia Commonwealth University, Richmond, VA 23298, USA.
5. Departments of Genome Sciences and Medicine, University of Washington, Seattle, WA 98195, USA.
6. Broad Institute, Cambridge, MA 02142, USA.
7. Cold Spring Harbor Laboratories, Cold Spring Harbor, NY 11724, USA.
8. Howard Hughes Medical Institute, Baylor College of Medicine, Houston, TX 77030, USA.