@book{242131,
	author = {Gress, Frank G. and ebrary, Inc.},
	title = {Atlas of endoscopic ultrasonography},
	publisher = {Wiley-Blackwell,},
	year = {2011.},
	address = {Chichester, West Sussex, UK :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10501274}
}