license

The journal uses the Creative Commons Attribution 4.0 International license, or CCBY   (https://creativecommons.org/licenses/by/4.0/). This license lets users to download, print, extract, reuse, archive, and distribute the article as long as proper credit is provided to the authors and the source of the work. It does not, however, allow authors to retain ownership of their copyrighted works. The license guarantees that the article can be included in any scientific archive and that it will be available as widely as feasible.