Name	Location	Contribution
Salman S. Ikramuddin, MD	Department of Neurology, University of Minnesota, Minneapolis	Drafting/revision of the manuscript for content, including medical writing for content; major role in the acquisition of data; study concept or design; analysis or interpretation of data
John A. Coburn, MD	Midwest Radiology, Roseville, MN	Major role in the acquisition of data
Solmaz Ramezani, MD	Department of Neurology, University of Minnesota, Minneapolis	Major role in the acquisition of data
Christopher Streib, MD, MS	Department of Neurology, University of Minnesota, Minneapolis	Drafting/revision of the manuscript for content, including medical writing for content; study concept or design; analysis or interpretation of data