@book{88614,
	author = {Ellis Jr., F. Henry and Olsen, Arthur M.},
	title = {Achalasia of the esophagus},
	publisher = {W.B. Saunders Company},
	year = {1969},
	volume = {9},
	series = {Major problems in clinical surgery},
	address = {Philadelphia},
	note = {Acervo Doutor Luis Fernando P. Botelho de Sousa}
}