1. Department of Neurology, Stanford University Medical Center, Stanford, California, U.S.A.
2. Department of Neurosurgery, Stanford University Medical Center, Stanford, California, U.S.A.
3. Stanford Stroke Center, Stanford University Medical Center, Stanford, California, U.S.A.
4. Department of Radiology, Stanford University Medical Center, Stanford, California, U.S.A.
5. Department of Medicine (Hematology), Stanford University Medical Center, Stanford, California, U.S.A.