1. National Center for Health Statistics, Centers for Disease Control and Prevention, Hyattsville, Maryland, USA
2. US Public Health Service, Rockville, Maryland, USA
3. National Center for Emerging and Zoonotic Infectious Diseases, Centers for Disease Control and Prevention, Fort Collins, Colorado, USA
4. Epidemic Intelligence Service, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
5. National Center for Immunization and Respiratory Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
6. Region 2 South Healthcare Coalition, Detroit, Michigan, USA
7. BIO5 Institute, University of Arizona, Tucson, Arizona, USA