@book{5497,
	author = {Last, John M., and International Epidemiological Association.},
	title = {A dictionary of epidemiology /},
	publisher = {Oxford University Press,},
	year = {c2001.},
	address = {New York :},
	edition = {4th ed.},
	url = {http://www.loc.gov/catdir/enhancements/fy0610/00037504-d.html}
}