Advertisements published in the journals must comply with the Advertising Law of The People’s Republic of China and national regulations. The advertising content shall be true and legal, without false content, absolute words or exclusive language. If there is any unreliable content, the advertising agency has the right to delete or refuse to publish. All advertising will be discussed and collectively decided by the editorial office at our meetings. The commercial content will be completely separated from academic content. Advertising will not affect the editors' decision to accept manuscripts. In case of potential conflicts of interest, authors, editors and reviewers will disclose the information in accordance with guidelines of COPE and relevant international standards.