@book{34945,
	author = {Nelson, Kenrad E.},
	title = {Infectious disease epidemiology :},
	publisher = {Jones and Bartlett,},
	year = {c2007.},
	address = {Sudbury, Mass. :},
	edition = {2nd ed.},
	url = {http://www.loc.gov/catdir/toc/ecip068/2006005286.html}
}