@book{5602,
	author = {Wolff, Bruce G. and Wolff, Bruce G.},
	title = {The ASCRS textbook of colon and rectal surgery },
	publisher = {Springer},
	year = {2007},
	address = {New York },
	edition = {Nil},
	url = {http://www.loc.gov/catdir/enhancements/fy0813/2006923505-d.html}
}