@book{4240,
	author = {Graves, Edmund. and National Center for Health Statistics U.S.},
	title = {Detailed diagnoses and procedures, National Hospital Discharge Survey, 1988-},
	publisher = {U.S. Dept. of Health and Human Services, Public Health Service, Centers for Disease Control, National Center for Health Statistics},
	year = {[1991]},
	series = {Vital and health statistics.},
	address = {Hyattsville, Md.},
	note = {"March 1991."}
}