[1] Johns Hopkins Univ, Sch Med, Dept Neurol, Baltimore, MD 21218 USA
[2] Tufts Med Ctr, Boston, MA USA
[3] Tufts Med Ctr, Inst Clin Res, Hlth Policy Studies, Boston, MA USA
[4] Duke Univ, Duke Clin Res Inst, Sch Med, Durham, NC USA
[5] Univ Utah, Sch Med, Salt Lake City, UT USA
[6] Vanderbilt Univ, Vanderbilt Inst Clin & Translat Res, Med Ctr, Nashville, TN USA
[7] Johns Hopkins Univ, Sch Med, Baltimore, MD USA
[8] Vanderbilt Univ, Med Ctr, Nashville, TN USA
[9] Natl Ctr Adv Translat Sci, Div Clin Innovat, Bethesda, MD USA
[10] Vanderbilt Univ Sch Med, Nashville, TN USA
[11] Vanderbilt Univ, Dept Med, Med Ctr, Nashville, TN USA
[12] Tufts Univ, Tufts Clin & Translat Sci Inst, Boston, MA USA
[13] Tufts Med Ctr, Hlth Policy Studies, Boston, MA USA
[14] Johns Hopkins Univ, Sch Med, Acute Care Neurol, Baltimore, MD USA
[15] Johns Hopkins Univ, Inst Clin & Translat Res, Sch Med, Baltimore, MD USA