1. Environmental and Occupational Health Unit, Center for Disease Control and Prevention, Maine Department of Health and Human Services, Augusta, ME
2. Office of Epidemiology; Washington State Department of Health, Olympia, WA
3. Environmental Surveillance and Policy, Environmental and Occupational Disease Epidemiology, New York City Department of Health and Mental Hygiene, New York, NY
4. Wisconsin Division of Public Health, Madison, WI