Submitted on: 30 November 2008.
Revised on: 27 December 2008.
Accepted on: 02 January 2009.
Revista del Cuerpo Medico del Hospital Nacional Almanzor Aguinaga Asenjo
Submitted on: 16 August 2007.
Revised on: 09 September 2007.
Accepted on: 13 September 2007.
Revista del Cuerpo Medico del Hospital Nacional Almanzor Aguinaga Asenjo
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Submitted on: 01 April 2009.
Revised on: 20 April 2009.
Accepted on: 25 April 2009.
Revista del Cuerpo Medico del Hospital Nacional Almanzor Aguinaga Asenjo
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