Open Access Statement

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.

Authors who publish in this journal agree to the following terms:
1. Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution-ShareAlike 4.0 International License that allows others to share the work with an acknowledgment of the work's authorship and initial publication in this journal.
2. Authors can enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgment of its initial publication in this journal.
3. Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) before and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).

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.