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Submitted on: 16 January 2003.
Revised on: 20 February 2003.
Accepted on: 17 April 2003.
___________________Advanced NanoBiomed Research---WILEY-V C H VERLAG GMBH
Submitted on: 05 September 2006.
Revised on: 25 September 2006.
Accepted on: 15 November 2006.
___________________Advanced NanoBiomed Research---WILEY-V C H VERLAG GMBH
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Submitted on: 09 February 2003.
Revised on: 05 June 2003.
Accepted on: 08 July 2003.
___________________Advanced NanoBiomed Research---WILEY-V C H VERLAG GMBH