About the Authors
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
Division of Global HIV/AIDS, Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America
Joshua Salomon is a member of the PLoS Medicine Editorial Board. We declare that we have no other conflicts of interest.
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.