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Inventories
3 Months Ended
Mar. 31, 2013
Notes to Consolidated Financial Statements [Abstract]  
Inventories

4. Inventories

At March 31, 2013 and December 31, 2012, inventories consisted of the following:

   March 31, 2013  December 31, 2012
Finished goods$653,894 $627,338
Raw materials and purchased components 176,939  171,373
Health care supplies 160,799  154,840
Work in process 84,934  83,258
 Inventories$1,076,566 $1,036,809