We require all authors to understand and abide by COPE(https://publicationethics.org/) publishing ethics, which provides ethical guidelines and codes of conduct for publishers, journal editors and reviewers. It mainly includes the following ethics:

· Authors: Each author must make a significant contribution to the work, and all authors and participants are responsible for the content of the work, whether in data collection, program design, research, or writing.

· Plagiarism: Improper reference (including reference the data and charts, etc. without indicating the source), self plagiarism, falsifying data, multiple publishing. Once found the above behavior or complaints received, we will contact the author for the raw data, if the author cannot provide sufficient evidences/explanation, the paper will be rejected and the published papers will be withdraw.

· Conflict of interest: Please indicate about any conflict of interest in published papers, including the research funding, direct or indirect financial support, or any other assistance. Please make sure there is no conflict of interest.

· Originality: Authors must certify that the submitted papers were not previously published nor currently being considered for publication elsewhere.

请所有作者理解并遵守COPE(https://publicationethics.org/)出版伦理，它为出版商、期刊编辑和审稿人提供了道德准则和行为准则。它主要包括以下伦理:

l 作者:每位作者必须对工作做出重大贡献，所有作者和参与者都对工作内容负责，无论是在数据收集，程序设计，研究还是写作方面。

l 抄袭:不当引用(包括引用数据、图表等不注明出处)、自我抄袭、伪造数据、多次发表。一旦发现上述行为或收到投诉，我们将联系作者索取原始数据，如果作者不能提供充分的证据/解释，将拒绝该论文并撤销已发表的论文。

l 利益冲突:请注明在发表的论文中是否存在利益冲突，包括研究经费，直接或间接的经济支持，或任何其他帮助。请确保没有利益冲突。

l 原创性:作者必须证明提交的论文以前没有发表过，也没有考虑在其他地方发表。