@book{176978,
	author = {Coggon, D. and Rose, G. A. and ebrary, Inc.},
	title = {Epidemiology for the uninitiated},
	publisher = {British Medical Journal,},
	year = {1986.},
	address = {London :},
	edition = {5th ed.},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10033056}
}