1. Department of Brain and Cognitive Sciences, Massachusetts Institute of Technology, Cambridge, United States
2. Whitehead Institute for Biomedical Research, Cambridge, United States
3. Department of Biology, Massachusetts Institute of Technology, Cambridge, United States
4. State Key Laboratories for Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, China
5. Department of Statistics, Harvard University, Cambridge, United States
6. The Broad Institute, Cambridge, United States
7. Department of Animal Biology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, United States
8. Institute for Regenerative Medicine, University of Pennsylvania, Philadelphia, United States