1. Immunization Safety Office, Centers for Disease Control and Prevention, Atlanta, Georgia2Department of Pediatrics, Emory University School of Medicine, Atlanta, Georgia
2. Immunization Safety Office, Centers for Disease Control and Prevention, Atlanta, Georgia
3. HealthPartners Institute for Education and Research, Minneapolis, Minnesota
4. The Center for Health Research, Kaiser Permanente Northwest, Portland, Oregon
5. Kaiser Permanente Vaccine Study Center, Oakland, California
6. Group Health Research Institute, Seattle, Washington
7. Department of Ambulatory Care Services, Denver Health, Denver, Colorado 8Institute for Health Research, Kaiser Permanente Colorado, Denver9Department of Pediatrics, University of Colorado, Denver
8. Department of Research and Evaluation, Kaiser Permanente Southern California, Pasadena
9. Rollins School of Public Health, Emory University, Atlanta, Georgia
10. Marshfield Clinic Research Foundation, Marshfield, Wisconsin
11. Emory Vaccine Center, Emory University, Atlanta, Georgia
12. Rollins School of Public Health, Emory University, Atlanta, Georgia13Emory Vaccine Center, Emory University, Atlanta, Georgia