@inbook{2643243, author={Brenda Waning and Michael Montagne}, title={Chapter 9. Principles of Pharmacoeconomics}, booktitle={Pharmacoepidemiology: Principles and Practice}, publisher={The McGraw-Hill Companies}, address={New York, NY}, year={2001}, url={accesspharmacy.mhmedical.com/content.aspx?aid=2643243} }