1. National Center for Environmental Health,
2. National Center for Infectious Diseases, and
3. Epidemiology Program Office, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
4. Food and Drug Administration, Washington, DC, USA
5. Preventive and Promotive Health Services, Kenya Ministry of Health, Nairobi, Kenya
6. Centers for Disease Control and Prevention, Kenya Field Office, Nairobi, Kenya
7. Centers for Disease Control and Prevention, Kenya Field Office, Kisumu, Kenya