About the Authors
Faculty of Medicine, University of Toronto, Toronto, Canada
Harvard Center for Population & Development Studies, Harvard University, Cambridge, Massachusetts, United States of America
Department of Society, Human Development and Health, School of Public Health, Harvard University, Boston, Massachusetts, United States of America
The authors have declared that no competing interests exist.
Conceived and designed the experiments: FR SVS. Performed the experiments: FR DC SVS. Analyzed the data: FR DC SVS. Contributed reagents/materials/analysis tools: FR DC SVS. Wrote the first draft of the manuscript: FR SVS. Contributed to the writing of the manuscript: FR DC SVS. ICMJE criteria for authorship read and met: FR DC SVS. Agree with manuscript results and conclusions: FR DC SVS.