[1
]
Clinician Investigator Training Program, College of Medicine, Mayo Clinic, 200 1st
St SW, Rochester, MN 55905; Department of Radiology, College of Medicine, Mayo Clinic,
200 1st St SW, Rochester, MN 55905. Electronic address: mcdonald.robert@mayo.edu.
[2
]
Department of Radiology, College of Medicine, Mayo Clinic, 200 1st St SW, Rochester,
MN 55905.
[3
]
Department of Radiology, College of Medicine, Mayo Clinic, 200 1st St SW, Rochester,
MN 55905; Department of Neurosurgery, College of Medicine, Mayo Clinic, Rochester,
Minnesota.