来源:Inquiry-The Journal of Health Care Organization Provision and Financing, 2012, 49(4): 300-302.
DOI:10.5034/inquiryjrnl_49.04.06
摘要
"It is one of the happy incidents of the federal system that a single courageous State may, if its citizens choose, serve as a laboratory; and try novel social and economic experiments without risk to the rest of the country."