1. Division of Gastroenterology, Hepatology and Nutrition (C.L.G.), Vanderbilt University Medical Center, Nashville.
2. Tennessee Center for AIDS Research (C.L.G.), Vanderbilt University Medical Center, Nashville.
3. Division of Cardiovascular Medicine (J.F.F.), Vanderbilt University Medical Center, Nashville.
4. Vanderbilt Microbiome Innovation Center (J.F.F.), Vanderbilt University Medical Center, Nashville.
5. Vanderbilt Institute for Infection, Immunology, and Inflammation (J.F.F.), Vanderbilt University Medical Center, Nashville.