Liquidity and Capital Resources

Our primary sources of liquidity have historically been cash from operations, cash from borrowings from third parties and related parties, as well as cash from issuance of equity and debt securities. We require this capital primarily to finance working capitalWorking capitalCurrent assets less current liabilities. The higher the working capital, the more secure a company’s liquidity position. needs, to fund acquisitions and develop free-standing renal dialysisDialysisForm of renal replacement therapy where a semipermeable membrane – in peritoneal dialysis the peritoneum of the patient, in hemodialysis the membrane of the dialyzer – is used to clean a patient’s blood. centers, to purchase equipment for existing or new renal dialysis centers and production sites, to repay debt and to pay dividends.

At December 31, 2010, we had cash and cash equivalents of $523 M. For information regarding utilization and availability under our Amended 2006 Senior Credit Agreement see Note 9.