Open Access Policy

This journal provides immediate open access to its content on the principle that making research freely available to the public supports a greater global exchange of knowledge. This journal is an open-access journal which means that all content is freely available without charge to users or institutions. Users are allowed to read, download, copy, distribute, print, search, or link to full-text articles in this journal without asking prior permission from the publisher or author.

This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License, which permits share, copy, and redistribute the material in any medium or format as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license. If you remix, transform or build upon the material, you must distribute your contributions under the same license as the original. The licensor cannot revoke these freedoms as long as you follow the license terms. 

You are free to:
Share — copy and redistribute the material in any medium or format.
Adapt — remix, transform, and build upon the material for any purpose, even commercially.

The licensor cannot revoke these freedoms as long as you follow the license terms.