@book{599529,
	author = {Witsberger, Christina. and Kominski, Gerald F. and Rand Corporation.},
	title = {Recent trends in length of stay for Medicare surgical patients /},
	publisher = {RAND,},
	year = {1990.},
	address = {Santa Monica, CA :},
	note = {"August 1990."},
	url = {http://www.rand.org/pubs/reports/R3940/}
}