[1] Univ Alabama Birmingham, Dept Med, Tinsley Harrison Internal Med Residency, 1720 Second Ave South,BDB 327, Birmingham, AL 35294 USA
[2] Univ Alabama Birmingham, Dept Pathol, Div Surg Pathol, Birmingham, AL 35294 USA
[3] Univ Alabama Birmingham, Dept Med, Div Gastroenterol & Hepatol, Birmingham, AL 35294 USA