1. Division of Foodborne, Waterborne, and Environmental Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
2. Weems Design Studio, Inc., Suwanee, Georgia, USA
3. IHRC, Inc., Atlanta, Georgia, USA
4. Oak Ridge Institute for Science and Education, Oak Ridge, Tennessee, USA
5. CAITTA, Inc., Herndon, Virginia, USA
6. Applied Maths NV, Sint-Martens-Latem, Belgium