@inbook{6999012, author={Adrienne Prestridge, MD}, editor={Goodman, Denise M. and Green, Thomas P. and Unti, Sharon M. and Powell, Elizabeth C.}, title={Chapter 18. Peak Flow Measurements}, booktitle={Current Procedures: Pediatrics}, publisher={The McGraw-Hill Companies}, address={New York, NY}, year={2007}, url={accesspediatrics.mhmedical.com/content.aspx?aid=6999012} }