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Authors
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Funding
Funding for this research was provided by:
National Institute on Drug Abuse (R01-DA034072)
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Article History
Accepted: 12 September 2017
First Online: 18 September 2017
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
