Manuscript acceptance requirements include writing competence in a given topic, great writing, and the quality of study design and methods. Many peer-reviewed journals ask reviewers to evaluate submitted publications based on their reputation and scientific worth. Thus, the most important factor in obtaining journal acceptance is the review process itself. Peer review has been widely adopted by publication houses as a way to ensure that only high-quality material makes it into print. Peer review was originally developed as a method for improving scholarly publishing by providing an independent check on the quality of articles being submitted for publication. This service allows editors to identify worthy submissions that may not have been apparent from just reading the abstract or title page, and enables them to publish any good papers that might otherwise have been rejected. Today, peer review is used by many publishers as one of several measures for selecting which articles to publish in their journals. The reasons for accepting or rejecting manuscripts vary between journals but usually fall under three main categories: ethical issues, methodological problems with the study, and interest/relevance to the field. Manuscripts may be accepted for publication if they conform to the journal's style and scope or if they present a new analysis of data that furthers our understanding of the subject matter. Sometimes authors' revisions are sufficient to secure acceptance.