1. Department of Molecular Biology, Princeton University, Princeton, NJ 08544, USA.
2. Lewis-Sigler Institute for Integrative Genomics, Princeton University, Princeton, NJ 08544, USA.
3. Department of Chemical and Biological Engineering, Princeton University, Princeton, NJ 08544, USA.
4. Research Computing, Office of Information Technology, Princeton University, Princeton, NJ 08544, USA.