@book{69897,
	author = {Gerstman, B. Burt. and ebrary, Inc.},
	title = {Epidemiology kept simple},
	publisher = {Wiley-Blackwell,},
	year = {2013.},
	address = {Chichester, West Sussex :},
	edition = {3rd ed.},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10662552}
}