@book{205060,
	author = {Kay, Helen H.},
	title = {The placenta : from development to disease /},
	publisher = {Wiley-Blackwell,},
	year = {2011.},
	address = {Chichester, West Sussex :},
	url = {http://onlinelibrary.wiley.com/book/10.1002/9781444393927}
}