@book{246757,
	author = {Messmann, Helmut. and Barnert, J�urgen. and ebrary, Inc.},
	title = {Atlas of colonoscopy},
	publisher = {Thieme,},
	year = {c2006.},
	address = {Stuttgart ;},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10170119}
}