@inbook{56952777, author={James F. Smith, MD, MS and Thomas J. Walsh, MD, MS}, editor={McAninch, Jack W. and Lue, Tom F.}, title={Chapter 45. The Aging Male}, booktitle={Smith & Tanagho's General Urology, 18e}, publisher={The McGraw-Hill Companies}, address={New York, NY}, year={2013}, url={accessmedicine.mhmedical.com/content.aspx?aid=56952777} }