1. Safety Assessment, Merck Research Laboratories; West Point; PA; 19486; USA
2. ChemRisk; 101 2nd Street, Suite 700; San Francisco; CA; 94105; USA
3. Department of Diagnostic Medicine/Pathology; Kansas State University, College of Veterinary Medicine; 101 Trotter Hall; Manhattan; KS; 66506-5601; USA
4. Department of Veterinary Integrative Biosciences, College of Veterinary Medicine and Biomedical Sciences, 4458 TAMU; Texas A&M University; College Station; TX; 77843-4458; USA