1. Department of Internal Medicine, Keesler Medical Center, Keesler Air Force Base, Biloxi, MS, USA
2. Department of Internal Medicine, David Grant Medical Center, Travis Air Force Base, Fairfield, CA, USA
3. Division of Hematology and Oncology, Department of Internal Medicine, Keesler Medical Center, Keesler Air Force Base, Biloxi, MS, USA
4. Division of Gastroenterology, Department of Internal Medicine, Singing River Hospital System, Biloxi, MS, USA
5. Department of Pathology, Singing River Hospital System, Biloxi, MS, USA
6. Division of Gastroenterology, Department of Internal Medicine, Keesler Medical Center, Keesler Air Force Base, Biloxi, MS, USA