In the review process, the Editorial Board carefully considers all submitted articles, our selection process has many steps, each part is reviewed from the aspect of writing and the substance related to the quality and relevance of the content until the articles are ready to be submitted to reviewers who have been appointed by Editorial Board. While we strive to honor requests for Review Express (Fast-Track), we cannot remove all stages of our review in response to such requests. When requesting expedited reviews, please understand that our selection process takes time.