[1] Johns Hopkins Sch Med, Armstrong Inst Patient Safety & Qual, Baltimore, MD 21205 USA
[2] Johns Hopkins Univ, Div Gen Internal Med, Dept Med, Sch Med, Baltimore, MD 21218 USA
[3] Johns Hopkins Univ, Dept Hlth Behav & Soc, Bloomberg Sch Publ Hlth, Baltimore, MD 21218 USA
[4] Johns Hopkins Univ, Welch Ctr Prevent Epidemiol & Clin Res, Baltimore, MD 21218 USA
[5] Johns Hopkins Bayview Med Ctr, Baltimore, MD USA
[6] Johns Hopkins Univ, Bloomberg Sch Publ Hlth, Dept Hlth Policy & Management, Baltimore, MD 21218 USA
[7] Johns Hopkins Sch Med, Anesthesiol & Crit Care, Baltimore, MD USA
[8] Johns Hopkins Sch Med, Div Hlth Sci Informat, Baltimore, MD USA
[9] Johns Hopkins Univ, Whiting Sch Engn, Malone Ctr Engn Healthcare, Baltimore, MD 21218 USA
[10] Johns Hopkins Sch Med, Pulm & Crit Care Med, Baltimore, MD USA
[11] BREATHE Project, Baltimore, MD USA
[12] Univ Oregon, Hlth Policy Res Grp, Eugene, OR 97403 USA
[13] Johns Hopkins Home Care Grp, Baltimore, MD USA
[14] COPD Fdn, Miami, FL USA