1. From the Department of Radiology (A.V., T.T.)
2. University of Cincinnati Medical Center, OH; Department of Radiology, Sunnybrook Research Institute, Toronto, ON (R.A.)
3. Department of Biostatistics, Cincinnati Children's Hospital Medical Center, OH (H.S.)
4. Radiology Associates of Richmond, VA (M.R.)
5. Department of Neurology, Sun Yat-sen University, Guangdong, China (Q.H.)
6. Department of Neurology, Centre Hospitalier Universitaire Vaudois, Lausanne, AS (P.M.)
7. Department of Neurology, University of Pittsburgh, PA (T.J.)
8. Department of Neuroradiology, Stanford University, CA (M.W.).
9. Department of Neurology (P.K.)