@book{6730,
	author = {Wolff, Klaus and Fitzpatrick, Thomas B},
	title = {Fitzpatrick's dermatology in general medicine ; Vol.2},
	publisher = {McGraw-Hill Medical},
	year = {2008},
	address = {New York },
	edition = {7th ed.},
	url = {http://www.loc.gov/catdir/enhancements/fy0743/2006103000-b.html}
}