1. Division of Headache and Neuro‐Ophthalmology University of Utah School of Medicine Salt Lake City UT USA
2. Department of Neurology University of Utah School of Medicine Salt Lake City UT USA
3. Diagnostic and Clinical Neurology University of Utah School of Medicine Salt Lake City UT USA
4. Department of Anesthesiology University of Utah School of Medicine Salt Lake City UT USA
5. Neuroradiology Imaging University of Utah School of Medicine Salt Lake City UT USA
6. Department of Radiology University of Utah School of Medicine Salt Lake City UT USA