1. The Lundquist Institute, Torrance, California, USA
2. Department of Microbiology & Immunology, Geisel School of Medicine at Dartmouth, Hanover, New Hampshire, USA
3. University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, USA
4. UCSF School of Medicine, San Francisco, California, USA
5. Wellcome Sanger Institute, Hinxton, United Kingdom
6. Department of Medicine, University of Cambridge, Cambridge, United Kingdom
7. Department of Public Health and Primary Care, University of Cambridge, Cambridge, United Kingdom
8. The Geffen School of Medicine, University of California, Los Angeles, California, USA