@inbook{57221051,
author={Qayyim Said},
editor={Yang, Yi and West-Strum, Donna},
title={Chapter 6. Other Methodological Issues},
booktitle={Understanding Pharmacoepidemiology},
publisher={The McGraw-Hill Companies},
address={New York, NY},
year={2011},
url={accesspharmacy.mhmedical.com/content.aspx?aid=57221051}
}