Submitted on: 12 March 1998.
Revised on: 31 May 1998.
Accepted on: 13 June 1998.
___________________Gaceta Mexicana de Oncologia---SOC MEXICANA ONCOLOGIA, A C
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Submitted on: 06 October 2016.
Revised on: 04 January 2017.
Accepted on: 17 January 2017.
___________________Gaceta Mexicana de Oncologia---SOC MEXICANA ONCOLOGIA, A C
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Submitted on: 05 August 1999.
Revised on: 04 October 1999.
Accepted on: 05 November 1999.
___________________Gaceta Mexicana de Oncologia---SOC MEXICANA ONCOLOGIA, A C
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Submitted on: 06 January 2012.
Revised on: 25 March 2012.
Accepted on: 24 May 2012.
___________________Gaceta Mexicana de Oncologia---SOC MEXICANA ONCOLOGIA, A C