@book{8185,
	author = {Wassertheil-Smoller, Sylvia.},
	title = {Biostatistics and epidemiology :},
	publisher = {Springer-Verlag,},
	year = {c2004.},
	address = {New York :},
	edition = {3rd ed.},
	url = {http://www.loc.gov/catdir/enhancements/fy0817/2003058444-d.html}
}