[1] Johns Hopkins Univ, Hlth Technol, Natl Hlth Mission Area, Appl Phys Lab APL, 11100 Johns Hopkins Rd, Laurel, MD 20723 USA
[2] Johns Hopkins Univ Hosp, Dept Neurol, 1800 Orleans St, Baltimore, MD 21287 USA
[3] Univ Rochester, Med Ctr, Ctr Hlth Technol, Saunders Res Bldg,265 Crittenden Blvd,CU 420694, Rochester, NY 14642 USA
[4] Armstrong Inst Patient Safety & Qual, 750 E Pratt St,15th Floor, Baltimore, MD 21202 USA
[5] Johns Hopkins Univ Hosp, Dept Internal Med, Div Gastroenterol, 1800 Orleans St, Baltimore, MD 21287 USA
[6] Brigham & Womens Hosp, Dept Internal Med, Div Gen Internal Med & Primary Care, 75 Francis St, Boston, MA 02115 USA
[7] Partners Healthcare, Clin & Qual Anal, Informat Syst, 93 Worcester Rd POB 81905, Wellesley, MA 02481 USA
[8] Massachusetts Gen Hosp, Dept Anesthesia, 55 Fruit St, Boston, MA 02114 USA