About the Authors

Till Bärnighausen, Joshua A. Salomon
Department of Global Health and Population, Harvard School of Public Health, Boston, Massachusetts, United States of America

Till Bärnighausen
Africa Centre for Health and Population Studies, University of KwaZulu-Natal, Mtubatuba, KwaZulu-Natal, South Africa

Nalinee Sangrujee
Division of Global HIV/AIDS, Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America

Corresponding Author

tbaernig@hsph.harvard.edu

Competing Interests

Joshua Salomon is a member of the PLoS Medicine Editorial Board. We declare that we have no other conflicts of interest.

Author Contributions

Analyzed the data: TB JAS. Contributed reagents/materials/analysis tools: TB JAS NS. Wrote the first draft of the manuscript: TB. Contributed to the writing of the manuscript: JAS NS. ICMJE criteria for authorship read and met: TB JAS NS. Agree with manuscript results and conclusions: TB JAS NS.