1 Department of Epidemiology and Biostatistics, School of Public Health, West Virginia University, 64 Medical Center Dr, Morgantown, WV 26506, USA ewlundstrom@mix.wvu.edu.
2 Transitional Year Residency Program, School of Medicine, West Virginia University, PO Box 9001-A, Morgantown, WV 26506, USA jacob.pence@hsc.wvu.edu.
3 Department of Epidemiology and Biostatistics, School of Public Health, West Virginia University, 64 Medical Center Dr, Morgantown, WV 26506, USA gordon.smith@hsc.wvu.edu.