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Browsing by Subject "Tranquilizantes"
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(s.d.)In 1987 a study was made of the consumption of dependency-producing substances in the urban population of Colombia. For this purpose the prevalence survey method was applied to a representative sample of 2,800 individuals ...
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(s.d.)An epidemiological investigation was conducted in 1988 to measure prevalence of the improper use of alcohol, tobacco, and illegal drugs in the Ecuadorian population. This research was based on a structured survey of 185 ...