[1] Univ Texas Hlth Sci Ctr Houston, McWilliams Sch Biomed Informat, Houston, TX USA
[2] Elimu Informat, El Cerrito, CA USA
[3] Vanderbilt Univ, Dept Biomed Informat, Med Ctr, Nashville, TN USA
[4] Univ Chicago, NORC, Bethesda, MD USA
[5] Agcy Healthcare Res & Qual, Ctr Evidence & Practice Improvement, Rockville, MD USA
[6] Crohns & Colitis Fdn, New York, NY USA
[7] Univ Texas Hlth Sci Ctr Houston, McWilliams Sch Biomed Informat, 7700 Fannin St, Suite 600, Houston, TX 77030 USA