Submitted on: 28 November 2003.
Revised on: 06 March 2004.
Accepted on: 29 April 2004.
___________________Avances en Biomedicina---UNIV ANDES, FAC MEDICINA
Submitted on: 17 August 2016.
Revised on: 06 October 2016.
Accepted on: 10 November 2016.
___________________Avances en Biomedicina---UNIV ANDES, FAC MEDICINA
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Submitted on: 13 April 2014.
Revised on: 14 June 2014.
Accepted on: 07 July 2014.
___________________Avances en Biomedicina---UNIV ANDES, FAC MEDICINA
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Submitted on: 14 June 2010.
Revised on: 23 July 2010.
Accepted on: 15 August 2010.
___________________Avances en Biomedicina---UNIV ANDES, FAC MEDICINA
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Submitted on: 21 November 2019.
Revised on: 02 January 2020.
Accepted on: 08 February 2020.
___________________Avances en Biomedicina---UNIV ANDES, FAC MEDICINA