@book{191182,
	author = {Machin, David, and Campbell, Michael J., and ebrary, Inc.},
	title = {Randomized clinical trials},
	publisher = {John Wiley & Sons,},
	year = {2010.},
	address = {Chichester, West Sussex ;},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10392944}
}