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Population and Economics 2(2): 1-4
doi:
10.3897/popecon.2.e36045
Published:
07 Jul 2018
This article is part of:
Authors
Faculty of Economics of Lomonosov Moscow State University, Moscow, Russia
Eurasian Harm Reduction Association (EHRA), Vilnius, Lithuania
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.