1. NSF International , Ann Arbor, Michigan 48105, USA
2. Inotiv-RTP , Morrisville, North Carolina 27560, USA
3. 21st Century Tox Consulting , Chapel Hill, North Carolina 27517, USA
4. European Commission Joint Research Centre , Ispra, Italy
5. Coca-Cola Company (formerly Physicians Committee for Responsible Medicine) , Atlanta, Georgia 30313, USA
6. The Dow Chemical Company , Midland, Michigan 48667, USA