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Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2011

Significant concentrations of accounts receivable include:



	2011		2010
Acute and extended care organizations	60	%	56	%
Managed care, insurance and other	28	%	32	%
Medicare/Medicaid	10	%	10	%
Other	2	%	2	%

Tabular disclosure of the nature of a concentration, a benchmark to which it is compared, and the percentage that the risk is to the benchmark.