@book{136191,
	author = {Block, Berthold. and Schachschal, Guido. and ebrary, Inc.},
	title = {Endoscopy of the upper GI tract},
	publisher = {Thieme,},
	year = {c2004.},
	address = {Stuttgart ;},
	note = {Includes index.},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10170122}
}