 Christina, in your opinion, what is the role of peer review in looking for ethics concern? We try to allow our reviewers to focus on the science and not focus so much on our policies or ethics guidelines. That being said, a lot of our reviewers will detect possible problems with images or portions of the paper that have been published before. We're really good at finding pieces of data that have appeared in the authors' prior works or have been submitted to another journal and they've reviewed it twice at the same time. So while we don't mandate that they look for ethics issues because we really want them to focus on whether the science is good or not, our reviewers are very good at detecting and determining if there's a problem and then they bring it to the attention of the associate editor who then brings it to my attention.