1. From the Department of Neurology, University of Pittsburgh Medical Center, PA (A.P.J., T.G.J.)
2. St Vincent Mercy Hospital, Toledo, OH (O.O.Z.)
3. Department of Neurology (D.S.L,)
4. University of California Los Angeles (D.S.L., R.J., V.S.)
5. Department of Neurological Surgery, University of Miami Miller School of Medicine/Jackson Memorial Hospital, FL (D.R.Y.)
6. Department of Neurology, Emory University School of Medicine, Grady Memorial Hospital, Atlanta, GA (D.C.H., R.G.N.)
7. Department of Radiology, Florida Hospital Neuroscience Institute, Winter Park (F.R.H.)
8. Department of Radiology, David Geffen School of Medicine (R.J., V.S.)
9. Department of Neurology, Promedica Toledo Hospital, OH (M.A.J.).