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. 2020 Dec 21;14:594566. doi: 10.3389/fnins.2020.594566

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Copyright © 2020 Bazzani, Ravaioli, Trieste, Faraguna and Turchetti.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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PRISMA flow diagram. The diagram indicates the number of articles in each step of the systematic review, from the initial identification to the application of the exclusion criteria.