1. Center for Biologics Evaluation and Research, US Food and Drug Administration, Silver Spring, Maryland, USA
2. Acumen LLC, Burlingame, California, USA
3. Division of Viral Diseases, National Center for Immunization and Respiratory Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
4. Centers for Medicare & Medicaid Services, Washington, DC, USA
5. Department of Economics, Stanford University, Stanford, California, USA