Submitted on: 28 December 2002.
Revised on: 10 April 2003.
Accepted on: 05 June 2003.
___________________Hellenic Journal of Nuclear Medicine
Submitted on: 16 October 2006.
Revised on: 26 January 2007.
Accepted on: 08 February 2007.
___________________Hellenic Journal of Nuclear Medicine
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Submitted on: 26 April 1998.
Revised on: 22 May 1998.
Accepted on: 18 June 1998.
___________________Hellenic Journal of Nuclear Medicine
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Submitted on: 19 August 2005.
Revised on: 08 October 2005.
Accepted on: 13 November 2005.
___________________Hellenic Journal of Nuclear Medicine