1. Alta Analytical Laboratory, El Dorado Hills, California, USA
2. Canadian Food Inspection Agency, Saskatoon, Saskatchewan, Canada
3. Bristol-Myers Squibb, New Brunswick, New Jersey, USA
4. FDA Center for Veterinary Medicine, Laurel, Maryland, USA
5. USDA/ARS Eastern Regional Research Center, Wyndmoor, Pennsylvania, USA
6. Pfizer Global Research and Development, Ann Arbor, Michigan, USA
7. FDA Center for Food Safety and Applied Nutrition, Washington, D.C., USA
8. Dow Chemical, South Charleston, West Virginia, USA
9. National Institute of Standards and Technology, Gaithersburg, Maryland, USA