1. The Adult and Child Center for Outcomes Research and Delivery Sciences, University of Colorado Anschutz Medical Campus and Children’s Hospital Colorado, Aurora, Colorado;
2. National Center for Immunization and Respiratory Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia;
3. Department of Community and Behavioral Health, Colorado School of Public Health, Denver, Colorado; and
4. Division of General Internal Medicine, Denver Health, Denver, Colorado