1. Department of Biochemistry and Molecular Biology, University of Arkansas for Medical Sciences, Little Rock, AR
2. Department of Pediatrics, College of Medicine, University of Arkansas for Medical Sciences, Little Rock, AR
3. Clinical Research Center, Center for Clinical and Translational Research, University of Arkansas for Medical Sciences, Little Rock, AR
4. Division of Biostatistics, College of Medicine, University of Arkansas for Medical Sciences, Little Rock, AR
5. Public Health Laboratory, Arkansas Department of Health, Little Rock, AR
6. Department of Environmental and Occupational Health, Fay W. Boozman College of Public Health, University of Arkansas for Medical Sciences, Little Rock, AR
7. Department of Pharmacology and Toxicology, College of Medicine, University of Arkansas for Medical Sciences, Little Rock, AR