@book{150737,
	author = {Halpern, Stephen H. and ebrary, Inc.},
	title = {Evidence-based obstetric anesthesia},
	publisher = {BMJ Books :},
	year = {c2005.},
	address = {Malden, Mass. :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10236683}
}