Affiliation: | 1. The Hiram C Polk Jr Department of Surgery, Division of Surgical Oncology, University of Louisville, Louisville, KY;2. Department of Biostatistics, College of Public Health, University of Kentucky, Lexington, KY;3. Biostatistics and Bioinformatics Shared Resource Facility, Markey Cancer Center, University of Kentucky, Lexington, KY;4. Kentucky Cancer Registry, Markey Cancer Center, University of Kentucky, Lexington, KY |