@inbook{1135738603, author={Brent Yeung and Joseph Mueller}, editor={Freeman, Brian S. and Berger, Jeffrey S.}, title={Peripheral Nerve Blocks: Trunk and Perineum}, booktitle={Anesthesiology Core Review: Part Two Advanced Exam}, publisher={McGraw-Hill Education}, address={New York, NY}, year={2016}, url={accessanesthesiology.mhmedical.com/content.aspx?aid=1135738603} }