About the Authors
Division of Epidemiology and Population Studies, Fogarty International Center, National Institutes of Health, Bethesda, Maryland, United States of America
Department of Global Health, School of Public Health and Health Services, George Washington University, Washington, D. C., United States of America
CV declares no competing interests in relation to this Perspective. LS is a paid consultant for SDI health (a health data business), and has received research support since 2008 from Wyeth (now Pfizer) for pneumococcal vaccine modelling.
ICMJE criteria for authorship read and met: CV LS. Wrote the first draft of the paper: CV LS.