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. 2021 Nov 19;8:744526. doi: 10.3389/frobt.2021.744526

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Copyright © 2021 Amirova, Rakhymbayeva, Yadollahi, Sandygulova and Johal.

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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Timespan of the experiment per year (left) and application fields (middle) and duration of sessions in application field (right).