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a) A cover letter stating that all authors have approved the submission of the
manuscript. The letter must be signed by the Corresponding Author and must inform the
e-mail addresses of all other authors so that they can be contacted by the Editorial
Office for confirmation of the submission.
b) An electronic copy of the text, tables and figures, including supplementary material
to be published online only. Formats for text are Word or RTF in Windows platform.
Images in TIFF or JPEG formats should be sent in separate files (For Figures, see
detailed instructions in 3.1.h). Mailed CD-ROMs must be labeled with the first author's
last name, platform and software. Failure to adhere to these guidelines can delay the
handling of your contribution and manuscripts may be returned before being reviewed.
c) Manuscripts including photos or any other identifiable data of human subjects must
be accompanied by a copy of the signed consent by the individual or his/her guardian.
3. Categories of Contribution
3.1. Research Articles
Manuscripts must be written in English in double-spaced, 12-point type throughout;
formatted to A4 paper with 2.5 cm margins; marked with consecutive line and page
numbers, beginning with the cover page.
The following elements must start on a new page and be ordered as they are listed
below:
a) The title page must contain: a concise and informative title; the authors’ names (first
name at full length); the authors’ institutional affiliation, including department,
institution, city, state or province and country; different affiliations indicated with
superscript numbers; a short running title of about 35 characters, including spaces; up to
five key words; the corresponding author’s name, postal address, phone and fax
numbers and email address. The corresponding author is the person responsible for
checking the page proofs, arranging for the payment of color illustrations and author’s
alteration charges.
b) The Abstract must be a single paragraph that does not exceed 200 words and
summarizes the main results and conclusions of the study. It should not contain
references.
c) The text must be as succinct as possible. Text citations: articles should be referred to
by authors’ surnames and date of publication; citations with two authors must include
both names; in citations with three or more authors, name the first author and use et al.
List two or more references in the same citation in chronological order, separated by
semi-colons. When two or more works in a citation were published in the same year, list
them alphabetically by the first author surname. For two or more works by the same
author(s) in a citation, list them chronologically, with the years separated by commas.
(Example: Freire-Maia et al., 1966a, 1966b, 2000). Only articles that are published or in
press should be cited. In the case of personal communications or unpublished results, all
contributors must be listed by initials and last name (et al. should not be used).
Numbers: In the text, numbers nine or less must be written out except as part of a date, a
fraction or decimal, a percentage, or a unit of measurement. Use Arabic numerals for