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. 2022 Nov 17;13:1066988. doi: 10.3389/fphar.2022.1066988

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Copyright © 2022 Nazarova, Sokolov, Chubarev, Tarasov and Schiöth.

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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The figure presents information about the number of trials among the most widely used pharmacological classes of drugs applied for ADHD treatment in two time intervals (1999–2009 and 2010–2020). The colors of the slices comply with the pharmacological classes. The data is due 4 January 2021.