1 Department of Pediatrics, University of California, Gilman Drive, La Jolla, San Diego, CA, 92093, USA. robknight@ucsd.edu.
2 Center for Microbiome Innovation, Jacobs School of Engineering, University of California, Gilman Drive, La Jolla, San Diego, CA, 92093-0436, USA. robknight@ucsd.edu.
3 Department of Computer Science and Engineering, University of California, Gilman Drive, La Jolla, San Diego, CA, 92093-0404, USA. robknight@ucsd.edu.
4 Department of Bioengineering, University of California, La Jolla, San Diego, CA, 92093-0412, USA. robknight@ucsd.edu.
5 Department of Microbiome Science, Max Planck Institute for Developmental Biology, Max Planck Ring, 72076, Tübingen, Germany.
6 Laboratory of Molecular Bacteriology, Department of Microbiology and Immunology, Rega Institute, KU Leuven, Herestraat, 3000, Leuven, Belgium.
7 VIB-KU Leuven Center for Microbiology, Campus Gasthuisberg, Rega Instituut, Herestraat, 3000, Leuven, Belgium.
8 Department of Dermatology and Microbiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA.