@inbook{1192637613, author={Aaron L. Berkowitz}, title={The Spinal Cord and Approach to Myelopathy}, booktitle={Clinical Neurology and Neuroanatomy: A Localization-Based Approach}, publisher={McGraw-Hill Education}, address={New York, NY}, year={2016}, url={accessmedicine.mhmedical.com/content.aspx?aid=1192637613} }