@inbook{1105828863, author={Pamela J. Levin and Jennifer M. Wu}, editor={Rogers, Rebecca G. and Sung, Vivian W. and Iglesia, Cheryl B. and Thakar, Ranee}, title={Epidemiology}, booktitle={Female Pelvic Medicine and Reconstructive Surgery: Clinical Practice and Surgical Atlas}, publisher={McGraw-Hill Education}, address={New York, NY}, year={2014}, url={obgyn.mhmedical.com/content.aspx?aid=1105828863} }