@inbook{546535,
author={Raymond S. Greenberg and Stephen R. Daniels and W. Dana Flanders and John William Eley and John R. Boring III},
title={Appendix B: Method for Determining the Confidence Interval Around the Risk Ratio},
booktitle={Medical Epidemiology, 4e},
publisher={The McGraw-Hill Companies},
address={New York, NY},
year={2005},
url={accesspharmacy.mhmedical.com/content.aspx?aid=546535}
}