1 Epidemiology, University of Delaware, College of Health Sciences, Newark, DE.
2 Office of Applied Research, Center for Preparedness and Response, Centers for Disease Control and Prevention, Atlanta, GA.
3 Center for Communication Science, RTI International, Durham, NC.
4 Avar Consulting, Rockville, MD.
5 US Public Health Service, Division of State and Local Readiness, Center for Preparedness and Response, Centers for Disease Control and Prevention, Atlanta, GA.