@inbook{1182932593, author={William Bernal and Yukiko Kimura}, editor={Kline, Mark W.}, title={Musculoskeletal Pain Syndromes}, booktitle={Rudolph's Pediatrics, 23e}, publisher={McGraw-Hill Education}, address={New York, NY}, year={2018}, url={accesspediatrics.mhmedical.com/content.aspx?aid=1182932593} }