[1] Vanderbilt Univ, Med Ctr, Dept Med, Div Epidemiol, Nashville, TN USA
[2] Guizhou Peoples Hosp, Guiyang, Peoples R China
[3] Vanderbilt Univ, Med Ctr, Dept Biostat, Nashville, TN USA
[4] Vanderbilt Univ, Med Ctr, Dept Med, Nashville, TN USA
[5] Saint Joseph Hlth Syst, South Bend, IN USA
[6] Vanderbilt Univ, Med Ctr, Dept Med, Div Geriatr Med, Nashville, TN USA
[7] Vanderbilt Univ, Med Ctr, Dept Med, Div Gastroenterol Hepatol & Nutr, Nashville, TN USA