@book{11238,
	author = {Townsend, Courtney M and Townsend, Courtney M},
	title = {Sabiston textbook of surgery : The biological basis of modern surgical practice},
	publisher = {Elsevier},
	year = {2017},
	address = {Philadelphia},
	edition = {20th ed.},
	note = {Preceded by Sabiston textbook of surgery / [edited by] Courtney M. Townsend Jr. [and others]. 19th ed. 2012.}
}