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Submitted on: 08 January 2011.
Revised on: 02 May 2011.
Accepted on: 18 May 2011.
___________________Comunidad y Salud---UNIV CARABOBO
Submitted on: 17 May 2024.
Revised on: 25 July 2024.
Accepted on: 02 September 2024.
___________________Comunidad y Salud---UNIV CARABOBO