1. Department of International Health, Johns Hopkins Bloomberg School of Public Health, 615 W Wolfe St, Baltimore, MD 21205, USA
2. Department of Health Policy and Management, Johns Hopkins Bloomberg School of Public Health, 615 W Wolfe St, Baltimore, MD 21205, USA
3. Center for Health Disparities Solutions, Johns Hopkins Bloomberg School of Public Health, 615 W Wolfe St, Baltimore, MD 21205, USA
4. Department of Surgery, University of California, 405 Hilgard Ave, Los Angeles, CA 90095, USA
5. Welch Medical Library, Johns Hopkins School of Medicine, 1900 E Monument St, Baltimore, MD 21205, USA
6. William Rand Kenan, Jr. Library of Veterinary Medicine, North Carolina State University, 1060 William Moore Dr., Raleigh, NC 27607, USA
7. International Vaccine Access Center, Johns Hopkins Bloomberg School of Public Health, 615 W Wolfe St, Baltimore, MD 21205, USA