@book{11070,
	author = {Beauchamp, R. Daniel and Townsend, Courtney M},
	title = {Sabiston textbook of surgery: },
	publisher = { Elsevier Saunders},
	year = { 2017},
	address = {Philadelphia, PA:},
	edition = {Twentieth edition},
	note = {Preceded by: Sabiston textbook of surgery / [edited by] Courtney M. Townsend Jr. [and others]. 19th ed. 2012}
}