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Population and Economics 2(2): 78-109
doi:
10.3897/popecon.2.e36048
Published:
07 Jul 2018
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Authors
Eurasian Harm Reduction Association (EHRA), Vilnius, Lithuania
Irina Kalabikhina 
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Faculty of Economics of Lomonosov Moscow State University, Russia
Conflict of interest
The authors have declared that no competing interests exist.
This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.