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[The gateway to illegal substance use in Colombia: violations of the gateway rule]

Jose A Posada-Villa1, Edwin Herazo, Adalberto Campo-Arias

  • 1Instituto de Investigación del Comportamiento Humano, Bogotá, Colombia.

Revista De Salud Publica (Bogota, Colombia)
|December 23, 2009
PubMed
Abstract

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