[1] Indiana Univ Sch Med, Dept Med, Div Gastroenterol & Hepatol, Indianapolis, IN 46202 USA
[2] Italian Univ Sport & Movement Foro Italico, Dept Hlth Sci, Rome, Italy
[3] Indiana Univ Sch Med, Dept Med, Div Gastroenterol & Hepatol, Indianapolis, IN 46202 USA
[4] Richard L Roudebush VA Med Ctr, Indianapolis, IN USA
[5] Sapienza Univ Rome, Internal Med & Med Specialties, Rome, Italy
[6] Sapienza Univ Rome, Dept Anat Histol Forens Med & Orthoped Sci, Rome, Italy
[7] Texas A&M Univ, Nutr & Food Sci, College Stn, TX 77843 USA
[8] Texas A&M Univ, Med Physiol, Coll Med, College Stn, TX 77843 USA