1. Department of Veterinary Anatomy and Public Health, Texas A&M University, 4458 TAMU, College Station, Texas 77843, Department of Environmental and Occupational Health, School of Rural Public Health, Texas A&M University System Health Science Center, Wells Fargo Plaza, 3000 Briarcrest Drive Suite 300, Bryan, Texas 77802, and United States Department of AgricultureAgricultural Research Service, Southern Plains Agricultural Research Center, Food and Feed Safety Research Unit, 2881 F&B Road, College Station,...