1. Department of International Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, USA
2. International Vaccine Access Center, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, USA
3. Center for Evidence Synthesis in Health, Department of Health Services, Policy, and Practice, Department of Epidemiology, Brown University School of Public Health, Providence, Rhode Island, USA
4. William Rand Kenan, Jr. Library of Veterinary Medicine, North Carolina State University, Raleigh, NC, USA
5. Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, USA