[1] Univ Pittsburgh, Sch Med, Neurol & Pharmacol, Pittsburgh, PA 15260 USA
[2] Univ Med Ctr Utrecht, Expt & Translat Neuroimaging, Utrecht, Netherlands
[3] Univ Med Ctr Utrecht, Biomed MR Imaging & Spect Grp, Utrecht, Netherlands
[4] NIH, Positron Emiss Tomog Dept, Ctr Clin, Bethesda, MD USA
[5] Univ Michigan, Neurosurg, Ann Arbor, MI 48109 USA
[6] Cedars Sinai Med Ctr, Dept Neurol, Los Angeles, CA 90048 USA
[7] Cedars Sinai Med Ctr, Comprehens Stroke Ctr, Los Angeles, CA 90048 USA
[8] UCSD, Neurosci Fac, La Jolla, CA USA
[9] UCSD, Ctr Stroke Res, La Jolla, CA USA
[10] Vet Affairs Med Ctr, Portland, OR USA
[11] UCSD, Med Ctr, Neurol, La Jolla, CA USA
[12] UCSD, Med Ctr, Stroke Ctr, La Jolla, CA USA
[13] UCSD, Dept Neurosci, La Jolla, CA USA
[14] Amer Acad Neurol, Boston, MA USA
[15] Amer Neurol Assoc, Mt Laurel, NJ USA
[16] Amer Heart Assoc, Dallas, TX USA
[17] European Stroke Org, Basel, Switzerland