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 is an open-access publication, which implies that all content is available to individuals and institutions for free. Users may read, download, copy, distribute, print, search, or link to full-text articles in this journal without contacting the publisher or author for permission first.

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 is by the Budapest Open Access Initiative.