Conclusions should be supported by the data obtained in the reported study; avoid speculation not warranted by experimental results, and label speculation clearly.
Conflicts of Interest: Because the essence of review articles is selection and interpretation of the literature, the Journal expects that the authors of such articles will not have significant financial associations with a company (or its competitor) that makes a product discussed in the article.
Acknowledgements All acknowledgements including financial support should be mentioned under the heading "acknowledgements" and not as footnotes on the first page or in the text.