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Submitted on: 02 June 2005.
Revised on: 29 June 2005.
Accepted on: 23 August 2005.
___________________Bioactive Materials---KEAI PUBLISHING LTD
Submitted on: 21 February 2005.
Revised on: 24 April 2005.
Accepted on: 25 May 2005.
___________________Bioactive Materials---KEAI PUBLISHING LTD
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Submitted on: 26 June 2002.
Revised on: 11 August 2002.
Accepted on: 20 September 2002.
___________________Bioactive Materials---KEAI PUBLISHING LTD
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Submitted on: 15 September 1999.
Revised on: 13 October 1999.
Accepted on: 22 November 1999.
___________________Bioactive Materials---KEAI PUBLISHING LTD
Submitted on: 19 August 2006.
Revised on: 20 November 2006.
Accepted on: 14 December 2006.
___________________Bioactive Materials---KEAI PUBLISHING LTD
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