@inbook{56996835, author={Diana Nicoll and Chuanyi Mark Lu and Michael Pignone and Stephen J. McPhee}, title={DDx/Algorithms}, booktitle={Pocket Guide to Diagnostic Tests, 6e}, publisher={The McGraw-Hill Companies}, address={New York, NY}, year={2012}, url={accesspharmacy.mhmedical.com/content.aspx?aid=56996835} }