@inbook{7020837, author={Stephens Richards}, editor={Rudolph, Colin D. and Rudolph, Abraham M. and Lister, George E. and First, Lewis R. and Gershon, Anne A.}, title={Chapter 219. Tumors}, booktitle={Rudolph's Pediatrics, 22e}, publisher={The McGraw-Hill Companies}, address={New York, NY}, year={2011}, url={accesspediatrics.mhmedical.com/content.aspx?aid=7020837} }