@inbook{1161334955, author={Ruth K. Foreman and Lyn McDivitt Duncan}, editor={Kang, Sewon and Amagai, Masayuki and Bruckner, Anna L. and Enk, Alexander H. and Margolis, David J. and McMichael, Amy J. and Orringer, Jeffrey S.}, title={Appendage Tumors of the Skin}, booktitle={Fitzpatrick's Dermatology, 9e}, publisher={McGraw-Hill Education}, address={New York, NY}, year={2019}, url={accessmedicine.mhmedical.com/content.aspx?aid=1161334955} }