[1] Univ Hosp Cleveland Med Ctr, Div Hematol Oncol, Cleveland, OH USA
[2] Univ Hosp Cleveland Med Ctr, Digest Hlth Inst, Cleveland, OH 44106 USA
[3] Case Western Reserve Univ, Sch Med, Dept Gastroenterol & Liver Dis, Cleveland, OH 44106 USA
[4] Fred Hutchinson Canc Ctr, Seattle, WA USA
[5] Univ Washington Med Ctr, Digest Hlth Ctr, Seattle, WA USA
[6] Johns Hopkins Univ, Sch Med, Div Gastroenterol, Baltimore, MD USA
[7] Univ N Carolina, Sch Med, Div Gastroenterol & Hepatol, Chapel Hill, NC USA
[8] Cleveland Clin Fdn, Dept Gastroenterol Hepatol & Nutr, Cleveland, OH USA
[9] Mayo Clin, Div Gastroenterol & Hepatol, Rochester, MN USA
[10] Washington Univ St Louis, Div Gastroenterol, Barnes Jewish Hosp, St Louis, MO USA
[11] Univ Penn, Perelman Sch Med, Hosp Univ Penn, Div Gastroenterol, Philadelphia, PA USA
[12] Columbia Univ, Irving Med Ctr, Dept Med, New York, NY USA
[13] Case Western Reserve Univ, Case Comprehens Canc Ctr, Sch Med, Cleveland, OH 44106 USA
[14] Univ Hosp Cleveland Med Ctr, Dept Pathol, Cleveland, OH USA