@book{27251,
	author = {National Medical School Review (Firm)},
	title = {Review for USMLE :},
	publisher = {Lippincott Williams & Wilkins,},
	year = {c1999.},
	address = {Philadelphia :},
	edition = {2nd ed.},
	note = {Includes index.},
	url = {http://www.loc.gov/catdir/enhancements/fy0712/98042496-d.html}
}