By submitting a manuscript to this journal, each author explicitly confirms that the manuscript meets the highest ethical standards for authors and coauthors. The results of research should be recorded and maintained in a form that allows analysis and review. A paper should contain sufficient detail and references. Other individuals who have contributed to the study should be acknowledged. Only persons who have significantly contributed to the research should be listed as authors. It is unethical for an author to publish manuscripts describing essentially the same research in more than one journal of primary publication. Submitting the same manuscript to more than one journal concurrently is unethical and unacceptable.