@inbook{57917422,
author={Beth Schrope},
editor={Schrope, Beth},
title={Chapter 18. Credentialing},
booktitle={Surgical and Interventional Ultrasound},
publisher={The McGraw-Hill Companies},
address={New York, NY},
year={2014},
url={accesssurgery.mhmedical.com/content.aspx?aid=57917422}
}