1. Department of Molecular and Cell Biology, UC Berkeley, Berkeley, CA, USA
2. Department of Genetics, Stanford University, Stanford, CA, USA
3. Department of Molecular and Cell Biology and Innovative Genomics Institute, UC Berkeley, Berkeley, CA, USA
4. Faculty of Industrial Engineering, Mechanical Engineering and Computer Science, University of Iceland, Reykjavik, Iceland
5. Departments of Mathematics and Computer Science, UC Berkeley, Berkeley, CA, USA