1 Department of Health Behavior, Gillings School of Global Public Health, University of North Carolina, 325 Rosenau Hall CB7440, Chapel Hill, NC 27599, USA.
2 Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, NC, USA.
3 Department of Family and Community Health, University of Pennsylvania School of Nursing, and Center for Health Incentives and Behavioral Economics, University of Pennsylvania, Philadelphia, PA, USA.
4 Department of Health Policy and Management, Mailman School of Public Health, Columbia University, New York, NY, USA.
5 Clinton Foundation, New York, NY, USA.
6 Stanford Law School and Stanford School of Medicine, Stanford University, USA.
7 Department of Health Policy, Stanford University School of Medicine, Stanford, CA, USA.
8 Freeman Spogli Institute for International Studies, Stanford University, Stanford, CA, USA.
9 Gulf States Health Policy Center, Bayou La Batre, AL, USA.
10 Department of Health Policy and Management, School of Public Health, Texas A&M University, College Station, TX, USA.
11 New York University Langone School of Medicine, New York University, New York, NY, USA.
12 School of Public Policy, University of California, Riverside, CA, USA.
13 Stanford Internet Observatory, Stanford University, Stanford, CA, USA.
14 Yale Institute for Global Health, New Haven, CT, USA.
15 Department of Internal Medicine (Infectious Diseases), Yale School of Medicine, New Haven, CT, USA.
16 Department of Obstetrics and Gynecology, Emory University, Atlanta, Georgia, USA.
17 Center for Infectious Disease Modeling and Analysis, Yale School of Public Health, New Haven, CT, USA.
18 Texas Children's Center for Vaccine Development, Departments of Pediatrics and Molecular Virology and Microbiology, National School of Tropical Medicine, Baylor College of Medicine, Houston, TX, USA.
19 Department of Biology, Baylor University, Waco, TX, USA.
20 Hagler Institute for Advanced Study at Texas A&M University, College Station, TX, USA.
21 James A Baker III Institute for Public Policy, Rice University, Houston, TX, USA.
22 Scowcroft Institute of International Affairs, Bush School of Government and Public Service, Texas A&M University, College Station, TX, USA.
23 The Immunization Partnership, Houston, TX, USA.
24 Stanford University School of Medicine, Stanford, CA, USA.
25 Department of Epidemiology of Microbial Diseases, Yale School of Public Health, New Haven, CT, USA.
26 Yale School of Nursing, Orange, CT, USA.
27 Department of International Health, Institute for Vaccine Safety, Johns Hopkins University Bloomberg School of Public Health, Baltimore, MD, USA.
28 Department of Health Policy and Management, Yale School of Public Health, New Haven, CT, USA.
29 Department of Health Policy and Management, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA.
30 Department of Pediatrics, University of Washington School of Medicine, Seattle, WA, USA.
31 Seattle Children's Research Institute, Seattle, WA, USA.