1. Division of Gastroenterology and Hepatology, Department of Internal Medicine, University of California Davis , Sacramento, CA, USA
2. Division of Foregut, Metabolic, General Surgery, Department of Surgery, University of California Davis , Sacramento, CA, USA
3. Department of Public Health Sciences, School of Medicine and Comprehensive Cancer Center, University of California, Davis , Davis, CA, USA
4. Department of Biomedical Informatics, College of Medicine, The Ohio State University , Columbus, OH, USA
5. Cancer Prevention Laboratory, Colorado State University , Fort Collins, CO, USA