@article {McGu2009epiper,
	title = {Covariate balance in a Bayesian propensity score analysis of beta blocker therapy in heart failure patients},
	journal = {Epidemiological Perspectives and Innovations},
	volume = {6},
	number = {1},
	year = {2009},
	pages = {article 5},
	publisher = {BioMed Central Ltd},
	doi = {10.1186/1742-5573-6-5},
	author = {McCandless, L. C. and Gustafson, P. and Austin, P. C. and Levy, A.}
}
