1. Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Oklahoma State University, 1 BVMTH, Stillwater, OK 74078
2. New Hope Animal Hospital, 103 East New Hope Road, Rogers, AR 72758
3. Equine Biodiagnostics Inc., Coldstream Research Campus, University of Kentucky, 1501 Bull Lea Road, Suite 104, Lexington, KY 40511
4. Department of Statistics, Oklahoma State University, 301E MSCS Building, Stillwater, OK, 74078—1056
5. Oklahoma Animal Disease Diagnostic Laboratory, Oklahoma State University, PO Box 7001, Stillwater, OK 74076—7001