@book{164217,
	author = {Coggon, D. and ebrary, Inc.},
	title = {Statistics in clinical practice},
	publisher = {BMJ,},
	year = {2003.},
	address = {London :},
	edition = {2nd ed.},
	note = {Previous ed.: 1995.},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10033052}
}