1 Women and Health Initiative, Department of Global Health and Population, Harvard T.H. Chan School of Public Health, 651 Huntington Avenue, Boston, MA 02115, USA. Electronic address: kholt@hsph.harvard.edu.
2 Departments of Family & Community Medicine, Obstetrics, Gynecology & Reproductive Sciences, and Epidemiology & Biostatistics, University of California San Francisco, 500 Parnassus Avenue, MUE3, San Francisco, CA 94143, USA. Electronic address: christine.dehlendorf@ucsf.edu.
3 Women and Health Initiative, Department of Global Health and Population, Harvard T.H. Chan School of Public Health, 651 Huntington Avenue, Boston, MA 02115, USA. Electronic address: alanger@hsph.harvard.edu.