1 Department of Pediatrics, University of Washington School of Medicine, Seattle, WA, USA; Treuman Katz Center for Pediatric Bioethics, Seattle Children's Research Institute, Seattle, WA, USA. Electronic address: douglas.opel@seattlechildrens.org.
2 Department of Health Behavior, Gillings School of Global Public Health, University of North Carolina, Chapel Hill, NC, USA; 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, University of Pennsylvania, Philadelphia, PA, USA; Behavioral Economics, University of Pennsylvania, Philadelphia, PA, USA.
4 Department of Health Law, Policy, and Management, Boston University School of Public Health, Boston, MA, USA.
5 School of Public Policy, University of California, Riverside, CA, USA.
6 Clinton Foundation, New York, NY, USA; Mailman School of Public Health, Columbia University, New York, NY, USA.
7 Yale Institute for Global Health, New Haven, CT, USA; Department of Internal Medicine (Infectious Diseases), Yale School of Medicine, New Haven, CT, USA.
8 Department of Obstetrics & Gynecology, Emory University, Atlanta, GA, USA.
9 Center for Infectious Disease Modeling and Analysis, Yale School of Public Health, New Haven, CT, USA.
10 Texas Children's Center for Vaccine Development, Baylor College of Medicine, Houston, TX, USA; Department of Pediatrics, Baylor College of Medicine, Houston, TX, USA; Department of Molecular Virology & Microbiology, Baylor College of Medicine, Houston, TX, USA; National School of Tropical Medicine, Baylor College of Medicine, Houston, TX, USA; Department of Biology, Baylor University, Waco, TX, USA; Hagler Institute for Advanced Study, Texas A&M University, College Station, TX, USA; Scowcroft Institute of International Affairs, Bush School of Government and Public Service, Texas A&M University, College Station, TX, USA; James A Baker III Institute for Public Policy, Rice University, Houston, TX, USA.
11 Department of Health Policy and Management, Yale School of Public Health, New Haven, CT, USA.
12 Gulf States Health Policy Center, Bayou La Batre, AL, USA.
13 New York University Langone School of Medicine, New York University, New York, NY, USA.
14 Stanford Internet Observatory, Stanford University, Stanford, CA, USA.
15 The Immunization Partnership, Houston, TX, USA.
16 Stanford University School of Medicine, Stanford, CA, USA.
17 Freeman Spogli Institute for International Studies, Stanford University, Stanford, CA, USA; Stanford Law School, Stanford, CA, USA; Department of Health Policy, Stanford University School of Medicine, Stanford, CA, USA.
18 Center for Health Policy & Law, Northeastern University, Boston, MA, USA.
19 Institute for Vaccine Safety, Department of International Health, Johns Hopkins University Bloomberg School of Public Health, Baltimore, MD, USA.
20 Department of Health Policy and Management, Johns Hopkins University Bloomberg School of Public Health, Baltimore, MD, USA.
21 Yale Institute for Global Health, New Haven, CT, USA; Department of Internal Medicine (Infectious Diseases), Yale School of Medicine, New Haven, CT, USA; Department of Epidemiology of Microbial Diseases, Yale School of Public Health, New Haven, CT, USA; Yale School of Nursing, Orange, CT, USA.