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 journal provides immediate open access to its content on the principle that making research freely available to the public which supports a greater global exchange of knowledge. All the published Open Access articles will be immediately and permanently free for everyone to read and download. We are continuously working with our author communities to select the best choice of license options, currently being defined for this journal as follows: Creative Commons Attribution-Share Alike 4.0 International (CC BY-SA 4.0)