1. Department of Global Health and Population, Harvard T. H. Chan School of Public Health, Boston, Massachusetts
2. Centre for Adolescent Health, Murdoch Children’s Research Institute and University of Melbourne, Parkville, Victoria, Australia
3. Division of Global Health Equity, Brigham and Women’s Hospital and Harvard Medical School, Boston, Massachusetts
4. Department of Science and Technology–National Research Foundation Center of Excellence in Human Development, University of Witwatersrand, Johannesburg, South Africa