1. Department of Dermatology, University of California, San Diego, San Diego, CA 92093, USA.
2. Department of Microbiology and Immunology, Geisel School of Medicine at Dartmouth, Hanover, NH 03755, USA.
3. Department of Pediatrics, University of California, San Diego, San Diego, CA 92093, USA.
4. Department of Chemistry and Biochemistry, University of North Carolina at Greensboro, Greensboro, NC 27402-6170, USA.
5. Center for Microbiome Innovation, University of California, San Diego, San Diego, CA 92093, USA.
6. Department of Bioengineering, University of California, San Diego, San Diego, CA 92093, USA.
7. Department of Veterans Affairs Denver Health Care System, Denver, CO 80045, USA.
8. Department of Immunology and Microbiology, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA.