1. Enteric Diseases Epidemiology Branch, Division of Foodborne, Waterborne, and Environmental Diseases, National Center for Emerging Zoonotic and Infectious Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia.
2. Colorado School of Public Health, Aurora, Colorado.
3. National Centre for Epidemiology and Population Health, Australian National University, Canberra, Australian Capital Territory, Australia.
4. French Institute for Public Health Surveillance, Saint Maurice, France.
5. National Institute for Public Health and the Environment, Bilthoven, The Netherlands.
6. Department of Public Health, University of Malta, Msida, Malta.
7. Hesse State Health Office, State of Hesse, Dillenburg, Germany.
8. Centre for Food-borne, Environmental, and Zoonotic Infectious Diseases, Guelph, Ontario, Canada.
9. University of Manchester, Hope Clinical Academic Group, Salford, United Kingdom.