@book{658, author = {Davidson, Stanley,}, title = {Davidson's essentials of medicine : vol.1 vol.2 and vol.3}, publisher = {Elsevier/Churchill Livingstone,}, year = {2009.}, address = {Edinburgh ;}, edition = {21st Edition}, note = {"A Davidson title."}, url = {http://www.loc.gov/catdir/toc/ecip0827/2008038902.html} }