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The National Institute on Drug Abuse (NIDA) is
part of the National Institutes of Health (NIH),
a component of the U.S. Department of Health and
Human Services.
The material has been elaborated by the National
Institute on Drug Abuse (NIDA) and the National Health
Institutes of the United States.
The backgrounds that are allocated to each one of
the documents do refer to the reality of the United
States and their high level of academic excellence and
the simplicity of its presentation grant them a
universal value.
All of this material is of free use and reproduction,
thanks to its original source.
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