@book{637,
	author = {Schwartz, Seymour I. and Shires III, G. Tom.},
	title = {Principios de Cirugía. },
	publisher = {Interamericana ; McGraw-Hill;},
	year = {1998.},
	address = {México: },
	edition = {6a ed.},
	note = {Schwartz, S. I., Shires III, G. T. y  Spencer, F. C. (1998). Principios de Cirugía. T.1 (6a ed.). México : Interamericana ; McGraw-Hill.}
}