[1] Cleveland Clin Fdn, Dept Gastroenterol & Hepatol, 9500 Euclid Ave, Cleveland, OH 44195 USA
[2] Cleveland Clin Fdn, Dept Quantitat Hlth Sci, 9500 Euclid Ave, Cleveland, OH 44195 USA
[3] NYU, Langone Hosp, Dept Internal Med, New York, NY USA
[4] Cleveland Clin Fdn, Dept Colorectal Surg, Cleveland, OH 44195 USA
[5] NYU, Dept Radiol, Langone Hosp, 560 1St Ave, New York, NY 10016 USA
[6] Cleveland Clin Fdn, Imaging Inst, 9500 Euclid Ave, Cleveland, OH 44195 USA
[7] NYU, Langone Hosp, Dept Gastroenterol, New York, NY USA