[1] Tulane Univ Hosp, Stroke Program, Dept Neurol, New Orleans, LA USA
[2] Doris Duke Charitable Fdn, New York, NY USA
[3] Univ Alabama Birmingham, Dept Epidemiol, Birmingham, AL USA
[4] Univ Alabama Birmingham, Dept Neurol, Birmingham, AL 35294 USA
[5] Univ Alabama Birmingham, Hlth Serv & Outcomes Res Ctr Outcome & Effectiven, Birmingham, AL USA
[6] Univ Alabama Birmingham, Ctr Excellence Comparat Effectiveness Res Elimina, Minor Hlth & Hlth Dispar Res Ctr MHRC, Birmingham, AL USA