Editors, authors and reviewers are required to keep confidential all details of the editorial and peer review process on submitted manuscripts. Unless otherwise declared as a part of open peer review, the peer review process is confidential and conducted anonymously; identities of reviewers are not released. Reviewers must maintain confidentiality of manuscripts. If a reviewer wishes to seek advice from colleagues while assessing a manuscript, the reviewer must consult with the editor and should ensure that confidentiality is maintained and that the names of any such colleagues are provided to the journal with the final report. Regardless of whether a submitted manuscript is eventually published, correspondence with the journal, referees' reports and other confidential material must not be published, disclosed or otherwise publicised without prior written consent. Reviewers should be aware that it is our policy to keep their names confidential and that we do our utmost to ensure this confidentiality.