1. Immunization Services Division (ISD), National Center for Immunization and Respiratory Diseases (NCIRD), Centers for Disease Control and Prevention (CDC), Atlanta, GA, USA
2. Epidemic Intelligence Service, Centers for Disease Control and Prevention (CDC), Atlanta, GA, USA
3. Leidos, Atlanta, GA, USA
4. Abt Associates, Cambridge, MA, USA
5. Division of Reproductive Health, National Center for Chronic Disease Prevention and Health Promotion, Centers for Disease Control and Prevention (CDC), Atlanta, GA, USA