1. University of California San Diego School of Medicine , San Diego, CA , USA
2. Carolinas Medical Center , Charlotte, NC , USA
3. University of Virginia School of Medicine , Charlottesville, VA , USA
4. Virginia Tech Carilion School of Medicine , Roanoke, VA , USA
5. Division of Gastroenterology, Virginia Tech Carilion School of Medicine , Roanoke, VA , USA
6. Center for Biostatistics and Health Data Science, Department of Statistics, Virginia Tech , Roanoke, VA , USA
7. Dermatology Section, Department of Internal Medicine, Virginia Tech Carilion School of Medicine , Roanoke, VA , USA
8. Department of Basic Science Education, Virginia Tech Carilion School of Medicine , Roanoke, VA , USA
9. Dominion Pathology Associates , Roanoke VA , USA