Submitted on: 05 June 1999.
Revised on: 21 July 1999.
Accepted on: 03 August 1999.
___________________Cartilage---SAGE PUBLICATIONS INC
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Submitted on: 08 November 2000.
Revised on: 20 February 2001.
Accepted on: 18 April 2001.
___________________Cartilage---SAGE PUBLICATIONS INC
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