@book{6059,
	author = {Le, Tao.},
	title = {First aid for the USMLE step 2 :},
	publisher = {McGraw-Hill Medical Pub. Div.,},
	year = {c2007.},
	address = {New York :},
	edition = {6th ed.},
	note = {Includes index.},
	url = {http://www.loc.gov/catdir/description/mh051/2004269781.html}
}