1. Oral Medicine and Diagnostic Sciences, College of Dentistry, University of Illinois Chicago, Chicago, IL, United States of America
2. Restorative Dentistry, University of Illinois Chicago, Chicago, IL, United States of America
3. Division of Epidemiology and Biostatistics, School of Public Health, University of Illinois at Chicago, Chicago, IL, United States of America
4. Biostatistics Shared Resource Core, University of Illinois Cancer Center, University of Illinois Chicago, Chicago, IL, United States of America
5. University of Illinois Cancer Center, University of Illinois Chicago, Chicago, IL, United States of America