Submitted on: 13 June 2004.
Revised on: 07 October 2004.
Accepted on: 29 November 2004.
___________________Acta Phlebologica---EDIZIONI MINERVA MEDICA
Submitted on: 17 April 1999.
Revised on: 15 June 1999.
Accepted on: 11 July 1999.
___________________Acta Phlebologica---EDIZIONI MINERVA MEDICA
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Submitted on: 01 December 2004.
Revised on: 13 January 2005.
Accepted on: 16 February 2005.
___________________Acta Phlebologica---EDIZIONI MINERVA MEDICA
Submitted on: 04 April 2019.
Revised on: 09 May 2019.
Accepted on: 07 June 2019.
___________________Acta Phlebologica---EDIZIONI MINERVA MEDICA
Submitted on: 14 March 2004.
Revised on: 12 May 2004.
Accepted on: 01 June 2004.
___________________Acta Phlebologica---EDIZIONI MINERVA MEDICA