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 relevant national regulations and guidelines of COPE and ICMJE.

All kinds of advertisements will be charged, except for public service advertising. The standards are as follows

(1) Back cover: RMB 8000/page;

(2) Inside front cover, front insert, inside back cover: RMB 6000/Page;

(3) Business card: RMB 500 / time.

A 25% discount shall be provided for advertising in two or more consecutive issues.