@inbook{1000186132, author={Lowell A. Goldsmith and Stephen I. Katz and Barbara A. Gilchrest and Amy S. Paller and David J. Leffell and Klaus Wolff}, title={Section 21. Epidermal and Appendageal Tumors}, booktitle={Fitzpatrick's Dermatology in General Medicine, 8e}, publisher={The McGraw-Hill Companies}, address={New York, NY}, year={2012}, url={accessmedicine.mhmedical.com/content.aspx?aid=1000186132} }