About the Authors
Harvard School of Public Health, Boston, Massachusetts, United States of America
Initiative for Global Health, Harvard University, Cambridge, Massachusetts, United States of America
University of California, San Francisco, California, United States of America
Institute for Health Metrics and Evaluation, University of Washington, Seattle, Washington, United States of America
The authors have declared that no competing interests exist.
ME, ABF, SCK, and CJLM designed the study. SCK collected data for the study. ME, ABF, and SCK analyzed the data. ME and ABF wrote the first draft of the paper. SCK and CJLM contributed to writing the paper.