1. American Recovery and Reinvestment Act of 2009 http://www.gpo.gov/fdsys/pkg/BILLS-111hr1enr/pdf/BILLS-111hr1enr.pdf
2. CMS Clinical Quality Measures http://www.cms.gov/Medicare/Quality-Initiatives-Patient-Assessment-Instruments/QualityMeasures/index.html?redirect=/QUALITYMEASURES
3. Patient Protection and Affordable Care Act http://www.gpo.gov/fdsys/pkg/PLAW-111publ148/pdf/PLAW-111publ148.pdf
4. Fact sheet: CMS proposes hospital outpatient and ambulatory centers policy and payment changes for 2015 http://www.cms.gov/Newsroom/MediaReleaseDatabase/Fact-sheets/2014-Fact-sheets-items/2014-07-03-4.html