[1] Cedars Sinai, Inflammatory Bowel & Immunobiol Res Inst, Karsh Div Digest & Liver Dis, Los Angeles, CA 90048 USA
[2] Dartmouth Inst Clin Practice & Hlth Policy, Lebanon, NH USA
[3] Baylor Coll Med, Houston, TX 77030 USA
[4] Oregon Clin, Portland, OR USA
[5] Univ Calif San Diego, San Diego, CA 92103 USA
[6] Dartmouth Hitchcock Med Ctr, Lebanon, NH 03766 USA
[7] Cedars Sinai, Dept Hlth Serv Res, Los Angeles, CA USA
[8] Cedars Sinai, Biostat Core, Los Angeles, CA USA
[9] Univ Colorado Anschutz Med Campus, Aurora, CO USA
[10] Saratoga Schenectady GI Associates, Saratoga Springs, NY USA
[11] NYU Langone Med Ctr, New York, NY USA
[12] Inst Healthcare Improvement, Boston, MA USA
[13] Medstar Georgetown, Washington, DC USA
[14] Univ Chicago, Chicago, IL 60637 USA
[15] Gastroenterol Associates, Providence, RI USA
[16] Gastro One, Germantown, TN USA
[17] Crohns & Colitis Fdn, New York, NY USA