About the Authors

Till Bärnighausen

tbaernig@hsph.harvard.edu

Affiliations Department of Global Health and Population, Harvard School of Public Health, Boston, Massachusetts, United States of America, Africa Centre for Health and Population Studies, University of KwaZulu-Natal, Mtubatuba, KwaZulu-Natal, South Africa

Joshua A. Salomon

Affiliation Department of Global Health and Population, Harvard School of Public Health, Boston, Massachusetts, United States of America

Nalinee Sangrujee

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

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.