@inbook{1120131785, author={Joseph R. D. Espiritu and George M. Matuschak}, editor={Lechner, Andrew J. and Matuschak, George M. and Brink, David S.}, title={Management of Chronic Obstructive Pulmonary Diseases}, booktitle={Respiratory: An Integrated Approach to Disease}, publisher={McGraw-Hill Education}, address={New York, NY}, year={2012}, url={accessmedicine.mhmedical.com/content.aspx?aid=1120131785} }