1. Department of Epidemiology and Biostatistics, Arnold School of Public Health, University of South Carolina, Columbia, South Carolina, USA
2. Dorn Research Institute, WJB Dorn Department of Veterans Affairs Medical Center, Columbia, South Carolina, USA
3. Interservice-Physician Assistant Program, MEDCoE, Joint Base San Antonio-Fort Sam Houston, Texas, USA
4. Department of Pharmacology, Physiology and Neuroscience, School of Medicine, University of South Carolina, Columbia, South Carolina, USA
5. Bioanalytics Branch, Health Effects Laboratory Division, National Institute for Occupational Safety and Health, Centers for Disease Control and Prevention, Morgantown, West Virginia, USA
6. Department of Epidemiology and Environmental Health, School of Public Health and Health Professions, University at Buffalo, the State University of New York, Buffalo, New York, USA