Rachel J. Keith, Rochelle H. Holm, Alok R. Amraotkar, Ted Smith, Ray Yeager, and Aruni Bhatnagar are with the Christina Lee Brown Envirome Institute, School of Medicine, University of Louisville, Louisville, KY. Megan M. Bezold, Adrienne M. Bushau-Sprinkle, Krystal T. Hamorsky, Kathleen T. Kitterman, and Kenneth E. Palmer are with the Center for Predictive Medicine for Biodefense and Emerging Infectious Diseases, University of Louisville. J. Michael Brick is with Westat Inc, Rockville, MD.