@book{88285,
	author = {Keighley, Michael R. B. and Williams, Norman S.},
	title = {Surgery of the anus, rectum and colon},
	publisher = {W.B. Saunders Company},
	year = {1993},
	volume = {II},
	address = {London},
	note = {Acervo do Doutor Luis Fernando P. Botelho de Sousa}
}