1. Smith College, Department of Biological Sciences, Northampton, Massachusetts, USA
2. University of Massachusetts Amherst, Program in Organismic and Evolutionary Biology, Amherst, Massachusetts, USA
3. University of California San Diego, Department of Pediatrics, San Diego, California, USA
4. University of California San Diego, Department of Computer Science and Engineering, San Diego, California, USA
5. University of California San Diego, Center for Microbiome Innovation, San Diego, California, USA
6. Temple University, Institute for Genomics and Evolutionary Medicine, Philadelphia, Pennsylvania, USA