All peer reviewers must follow these ethical guidelines for  journal articles in review:

• Reviewers must give unbiased consideration to each manuscript submitted. They should judge each on its merits, without regard to race, religion, nationality, sex, seniority, or institutional affiliation of the author(s).
• Reviewers must declare any conflict of interest before agreeing to review a manuscript. This includes any relationship with the author that may bias their review.
• Reviewers must keep the peer review process confidential. They must not share information or correspondence about a manuscript with anyone outside of the peer-review process.
• Reviewers should provide a constructive, comprehensive, evidenced, and appropriately substantial peer review report.
• Reviewers must avoid making statements in their report which might be construed as impugning any person’s reputation.
• Reviewers should make all reasonable effort to submit their report and recommendation on time. They should inform the editor if this is not possible.
• Reviewers should call to the journal editor’s attention any significant similarity between the manuscript under consideration and any published paper or submitted manuscripts of which they are aware.