@book{605,
	author = {Berkow, Robert and Fletcher, Andrew J, },
	title = {El Manual Merck.},
	publisher = {Harcourt Brace;},
	year = {1994.},
	address = {Madrid: },
	edition = {9a ed. correspondiente a las 16a edicion original },
	note = {Berkow, R. y Fletcher, A. J. (Dirs.). (1994). El Manual Merck. De diagnóstico y terapéutica. (9a ed.). Madrid : Harcourt Brace.}
}