@book{208165,
	author = {Gress, Frank G.,},
	title = {Endoscopic ultrasonography /},
	publisher = {John Wiley & Sons Inc.,},
	year = {2016.},
	address = {Chichester, West Sussex ;},
	edition = {Third edition.},
	url = {http://onlinelibrary.wiley.com/book/10.1002/9781118781067}
}