1. Institute for Genome Sciences, University of Maryland School of Medicine, Baltimore, Maryland, USA
2. Department of Microbiology and Immunology, University of Maryland School of Medicine, Baltimore, Maryland, USA
3. Ragon Institute of MGH, MIT, and Harvard, Cambridge, Massachusetts, USA
4. Division of Infectious Diseases & Geographic Medicine, Department of Medicine, Stanford University School of Medicine, Stanford, California, USA
5. Department of Microbiology & Immunology, Stanford University School of Medicine, Stanford, California, USA
6. Infectious Diseases Section, Veterans Affairs Palo Alto Health Care System, Palo Alto, California, USA
7. Division of Infectious Diseases, Massachusetts General Hospital, Boston, Massachusetts, USA