1. Fort Peck Community College, Poplar, Montana, USA
2. Section of Gastroenterology, Boston University School of Medicine, USA
3. Section of Gastroenterology Veterans Affairs Boston Healthcare System Boston, Massachusetts, USA
4. Department of Biochemistry Robert C Byrd Health Sciences Center and Section of Digestive Diseases, West Virginia University School of Medicine, Morgantown, West Virginia, USA
5. Department of Microbiology and Cell Biology, Montana State University, Bozeman, MT, USA
6. Boston University Clinical and Translational Science Institute, Boston, Massachusetts, USA