1. Christina D. Bethell () is a professor in the Department of Population, Family, and Reproductive Health, Johns Hopkins Bloomberg School of Public Health, in Baltimore, Maryland.
2. Narangerel Gombojav is an assistant scientist in the Department of Population, Family, and Reproductive Health, Johns Hopkins Bloomberg School of Public Health.
3. Robert C. Whitaker is director of research and research education at the Columbia-Bassett Program of the Columbia University Vagelos College of Physicians and Surgeons, in New York, New York, and the Bassett Medical Center, in Cooperstown, New York. He is also affiliated with the Bassett Research Institute at the Bassett Medical Center, in Cooperstown.