[1] Med Univ South Carolina, Charleston, SC USA
[2] Stanford Univ, Sch Med, Stanford, CA USA
[3] Duke Univ, Med Ctr, Durham, NC USA
[4] Wake Forest Baptist Hlth, Winston Salem, NC USA
[5] Beth Israel Deaconess Med Ctr, Boston, MA USA
[6] Brown Neurol, Providence, RI USA
[7] Univ Mississippi, Med Ctr, University, MS USA
[8] Baylor Coll Med, Houston, TX USA
[9] Univ Wisconsin, Dept Neurol, Madison, WI USA
[10] Univ Oklahoma, Hlth Sci Ctr, Norman, OK USA
[11] Harvard Med Sch, Massachusetts Gen Hosp, Boston, MA USA
[12] Univ Minnesota, Med Ctr, Minneapolis, MN USA
[13] Univ Alabama Birmingham, Neurol, Birmingham, AL USA