1. Epidemic Intelligence Service, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
2. Division of Adolescent and School Health, National Center for HIV/AIDS, Viral Hepatitis, STD, and TB Prevention, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
3. US Public Health Service Commissioned Corps, Rockville, Maryland, USA
4. Division of Unintentional Injury Prevention, National Center for Injury Prevention and Control, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
5. Division of Population Health Data, Virginia Department of Health, Richmond, Virginia, USA