@inbook{1101633306,
author={Timothy J. Martin, MD and James J. Corbett, MD},
title={Pain and Sensation},
booktitle={Practical Neuroophthalmology},
publisher={McGraw-Hill Education},
address={New York, NY},
year={2013},
url={neurology.mhmedical.com/content.aspx?aid=1101633306}
}