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Submitted on: 27 January 2011.
Revised on: 18 March 2011.
Accepted on: 04 April 2011.
___________________Gaceta Medica de Mexico---ACAD NACIONAL MEDICINA MEXICO
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Submitted on: 14 August 2007.
Revised on: 26 September 2007.
Accepted on: 18 November 2007.
___________________Gaceta Medica de Mexico---ACAD NACIONAL MEDICINA MEXICO
Submitted on: 05 February 2025.
Revised on: 24 April 2025.
Accepted on: 13 June 2025.
___________________Gaceta Medica de Mexico---ACAD NACIONAL MEDICINA MEXICO
Submitted on: 14 November 2001.
Revised on: 07 February 2002.
Accepted on: 01 April 2002.
___________________Gaceta Medica de Mexico---ACAD NACIONAL MEDICINA MEXICO