@article {630927,
	title = {Factors of U.S. Hospitals Associated with Improved Profit Margins: An Observational Study},
	journal = {Journal of General Internal Medicine},
	volume = {33},
	number = {7},
	year = {2018},
	pages = {1020-1027 },
	author = {David M. Cutler and Dan Ly}
}
