1. Department of Health, Behavior and Society, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD, USA
2. Institute for Vaccine Safety, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD, USA
3. Perdido, LLC, Alexandria, VA, USA
4. Center for Global Education, Earlham College, Tucson, AZ, USA
5. Center for Global Health Innovation, Atlanta, GA, USA
6. Utah County Health Department, Provo, UT, USA