@book{308473,
	author = {Schmidt, Andrew H. and American Academy of Orthopaedic Surgeons},
	title = {OKU, Orthopaedic knowledge update},
	publisher = {American Academy of Orthopaedic Surgeons},
	year = {2010},
	address = {Rosemont, IL},
	edition = {Cuarta edición}
}