3DeNavas-Wah, Proctor and Smith. 2009, Income, Poverty, and Health Insurance Coverage in the United States :2008, U. S. Bureau of the Census.
4Kaiser Family Foundation and Health Research & Educational Trust. 2009, Employer Health Benefit 2009 Annual Survey.
5McKinsey & Company ,2008 , Accounting for the Cost of U. S. Health Care:A New Look at Why Americans Spend More, McKinsey Global Institute.
6Himmelstein et. al. ,2009 ,Medical Bankruptcy in the United States,2007 :Results ol a National Study,American Journal of Medicine, 122 (8) :741 - 746.
7American Health Insurance Plans ,2009, Individual Health Insurance 2009 -A Comprehensive Survey of Premiums, Availability, and Benefits.
8Collins, et. al. ,2008, Losing Ground:How the Loss of Adequate Health Insurance Is Burdening Working Families-Findings from the Commonwealth Fund Biennial Health Insurance Surveys ,2001 -2007 ,The Commonwealth Fund.
9Bernard, Banthin and Encinosa,2009, Wealth, Income, and the Affordability of Health Insurance, Health Affairs ,28:887 - 896.
10Institute of Medicine ,2009 ,America's Uninsured Class: Consequences for Health and Health Care, National Academies Press.