The following is the manuscript type classification used by the Editorial Board.

1) Article: An account of an author's work in a particular field. It should contribute new knowledge to the field in which the research is conducted.

2) Review Article: A critical analysis of the current literature in a aprticular field, or a synthesis of the literature in a aprticular field during an explicit period of time.

3) Brief Article: A short article (note) having the same characteristics as an article.

4) Forum: Letters to the Editor, comments and responses, preliminary results or findings, and miscellany.

5) Book Reviews.