1. Division of Infectious Diseases and Vaccinology, School of Public Health, University of California, Berkeley, Berkeley, California, USA
2. Division of Epidemiology, School of Public Health, University of California, Berkeley, Berkeley, California, USA
3. Creative Testing Solutions, Tempe, Arizona, USA
4. Ortho Clinical Diagnostics, Rochester, New York, USA
5. Vitalant Research Institute, San Francisco, California, USA
6. Department of Laboratory Medicine, University of California, San Francisco, California, USA