1. Pharmaceutical Sciences, University of Kentucky, Lexington, KY, USA;
2. Anatomical Sciences & Neurobiology, University of Louisville, Louisville, KY, USA;
3. Chemistry, University of Kentucky, Lexington, KY, USA;
4. Chemical and Materials Engineering, University of Kentucky, Lexington, KY, USA;
5. Plant and Soil Sciences, University of Kentucky, Lexington, KY, USA;
6. Statistics, University of Kentucky, Lexington, KY, USA;
7. CDC, NIOSH, Cincinnati, OH, USA