1. Markey Cancer Center, University of Kentucky, Lexington, KY, USA
2. Department of Internal Medicine, University of Kentucky, Lexington, KY, USA
3. University of Cincinnati School of Medicine, Cincinnati, Ohio, USA
4. Kentucky College of Osteopathic Medicine, Pikeville, KY, USA
5. Department of Biostatistics, University of Kentucky, Lexington, KY, USA
6. Kentucky Cancer Registry, Lexington, KY, USA
7. Department of Surgery University of Kentucky, Lexington, KY, USA