Conflict of interest exists when an author, reviewer, or editor has relationships that might inappropriately influence his or her actions. They may be personal, commercial, political, academic or financial. "Financial" interests may include employment, research funding, stock or share ownership, payment for lectures or travel, consultancies or company support for staff. Such interests, where relevant, must be declared to editors by researchers, authors, and reviewers. Editors should also disclose relevant conflicts of interest to their readers. If in doubt, disclose. Sometimes editors may need to withdraw from the review and selection process for the relevant submission.