1. Department of Biomedical Engineering University of Virginia Charlottesville Virginia USA
2. Department of Neurosurgery Fondazione IRCCS Istituto Neurologico C. Besta Milan Italy
3. Department of Neurosurgery University of Virginia Charlottesville Virginia USA
4. Center for Comparative Medicine University of Virginia Charlottesville Virginia USA
5. Department of Radiology Stanford University Stanford California USA
6. Department of Radiology University of Virginia Charlottesville Virginia USA