1. Department of Internal Medicine, Atrium Health Carolinas Medical Center, Charlotte, NC 28202, USA
2. Department of Internal Medicine, The George Washington University, Washington, DC 20052, USA
3. Department of Internal Medicine, Virginia Commonwealth University, Richmond, VA 23284, USA
4. Department of Internal Medicine, Eastern Virginia Medical School, Norfolk, VA 23507, USA
5. Department of Gastroenterology, Eastern Virginia Medical School, Norfolk, VA 23507, USA