@book{30144,
	author = {Spiro, Stephen G.},
	title = {Clinical respiratory medicine},
	publisher = {Elsevier Saunders,},
	year = {c2012.},
	address = {Philadelphia :},
	edition = {4th ed.},
	url = {http://www.columbia.edu/cgi-bin/cul/resolve?clio10037453}
}