©The Author(s) 2021. Published by Baishideng Publishing Group Inc. All rights reserved. This article is an
open-access article that was
selected by an in-house editor and
fully peer-reviewed by external
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NonCommercial (CC BY-NC 4.0)
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s/by-nc/4.0/
Bestelakorik adierazi ezean, itemaren baimena horrela deskribatzen da:©The Author(s) 2021. Published by Baishideng Publishing Group Inc. All rights reserved. This article is an open-access article that was selected by an in-house editor and fully peer-reviewed by external reviewers. It is distributed in accordance with the Creative Commons Attribution NonCommercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is non-commercial. See: htt p://creativecommons.org/License s/by-nc/4.0/