Guidelines for Publication
Instructions for Authors
- International Journal of Cardiovascular Sciences
- Writing instructions
- Peer review
- Submitting the manuscript
- Typing instructions
- Standards for references
- Organization of illustrations (Tables, Charts and Figures)
- Structure of sections:
- Statistical guidelines
The International Journal of Cardiovascular Sciences (Int J Cardiovasc Sci.) is published by the Brazilian Society of Cardiology of the State of Rio de Janeiro on a bimonthly basis. Created in 2015, its predecessors are Revista da SOCERJ and Revista Brasileira de Cardiologia, created in 1998 and 2010, respectively. In was indexed in SciELO in May 2017, and is available online in English and Portuguese at: http://www.onlineijcs.org. Its purpose is to publish manuscripts on cardiovascular topics, emphasizing original manuscripts, covering epidemiology aspects, multidisciplinary studies, evaluations of healthcare quality, clinical study designs and single-center and multicenter studies, to help disseminate scientific research about cardiovascular sciences.
It is made up by the following sections:
a. Original Manuscript (OM)
b. Review Manuscript (RM)/Clinical Update (CU)
c. Preliminary Communication (PC)
d. Case Report (CR)
e. Cardiovascular Imaging (CI)
f. Point of View (PV)
h. Letter to the Editor
2.1 All scientific contributions submitted for publication will be submitted to the Editor, Members of the Editorial Board and Reviewers. The International Journal of Cardiovascular Sciences is entitled to refuse any manuscript considered insufficient or at odds with the principles of medical ethics. Acceptance will occur according to originality, significance and scientific contribution.
2.2 Any manuscripts previously published or being analyzed by other journals will not be accepted. The authors should take full responsibility for that information.
2.3 The manuscripts accepted for publication may undergo a new editorial review to ensure consistency, cohesiveness and coherence of the texts to be published, without interfering with the meaning of the texts.
2.4 All manuscripts published are the responsibility of the authors, as well as the concepts conveyed therein.
2.5 The manuscripts will be published in order of acceptance by the Editorial Board of the International Journal of Cardiovascular Sciences, rather than by the order received.
2.6 All rights reserved. The duplication or reproduction of this Journal, without the express consent of SBC, either entirely, partially or otherwise, is expressly forbidden.
2.7 The instructions for publication are set out below, and are available at: http://www.onlineijcs.org
2.8 Only those manuscripts which are strictly in keeping with the established standards will be submitted for appraisal and review by the members of the Editorial Board.
2.9 The authors are not required to pay any submission and evaluation fees. There no article processing charges (APCs) either.
2.10 The manuscripts are checked using the iThenticate tool for plagiarism control. Control is done on manuscripts forwarded to peer review.
3.1 Journal of Cardiovascular Sciences will be submitted to peer review by two reviewers appointed by the Editor of the Journal among the Advisory Board and Invited Reviewers, who will make general comments about the manuscript, pointing out if it should be published, rectified according to recommendations or rejected. Should there be any difference between two reviewers, a third reviewer will be called for an improved judgment. The Journal’s Editor, in possession of this information, will make a final decision about the publication.
3.2 Whenever any changes are suggested, they will be sent to the main author for a response. Then, the manuscript will be sent to the reviewers, who will check compliance with the requirements and requests.
3.3 Authors’ requests for changes to the manuscript after the review in Portuguese and English must be made exclusively in the Word format. After the PDF version is available, no more changes will be allowed, except those that may potentially adversely interfere with the contents of the manuscript.
3.4 The decision about accepting the manuscript for publication will happen, whenever possible, within 90 days as of the date of receipt.
4.1 The manuscripts should be submitted to the International Journal of Cardiovascular Sciences via the Internet and system, available at: http://www.onlineijcs.org For questions, please contact SOCERJ on the following phone numbers: (+55 21) 2552 0864 or (+55 21) 2552 1868.
4.2 The drafting of a Coversheet with the following information is mandatory upon submission:
4.2.1 Title in Portuguese (up to 100 characters); Title in English;
4.2.2 Short title (up to 50 characters);
4.2.3 Indication of the section to which the manuscript is being submitted (refer to sections in Item 1);
4.2.4 Name, address, phone number and email of the main author for mailing purposes;
4.2.5 Full name of all other co-authors;
4.2.6 The Institution of which the authors are members, indicating the Department/Service/ Sector; city and state and country. If the authors are members of different institutions, then please use superscript numbering to make it easier to identify the institutions;
4.2.7 Author and coauthor’s declaration that everyone agrees with the contents of the manuscript.
4.3 The following statements should be made in the manuscript
4.3.1 Potential conflicts of interests
- The authors should indicate whether there are potential conflicts of interest following the conclusions of the manuscript. There is conflict of interest when the author (or his institution) has financial or personal relationships that adversely affect the actions. A declaration of conflicting interests must be filled out and signed by all authors, and submitted to the IJCS. Available at: http://www.onlineijcs.org
4.3.2 Sources of funding
The author should state whether the study had any external funding sources, indicating the sources of financial support.
4.3.3 Academic association
The author should state whether the manuscript submitted is part of any academic papers (Final Term Papers or Theses) and should inform the institution.
4.3.4 Ethical aspects
- The authors must inform in the Methods
section, the ethical aspects concerning their
manuscript, namely: approval of their research
by the Research Ethics Committee of the
Institution, in accordance with the Declaration
of Helsinki http://www.ufrgs.br/HCPA/gppg/helsin5.htm; refer to the Informed
Consent when the research study involves
human beings in their entirety or parts thereof,
including the management of information and
- When it comes to experimental research involving animals, this must conform to the standards set out in the Guide for the Care and Use of Laboratory Animals (Institute for Laboratory Animal Research, National Academy of Sciences, Washington D.C., 2011).
4.4 Additional information
4.4.1 Authors’ contributions- The corresponding author must fill out and sign the authors’ contribution form, including information about the contribution of all co-authors, and submit it to the IJCS. This is available at: http://www.onlineijcs.org
4.4.2 Transfer of copyrights
- The authors of approved manuscripts must fill out and sign, before the publication, the copyright transfer form and submit it to the IJCS. This is available at: http://www.onlineijcs.org
4.5 Clinical studies
4.5.1 The International Committee of Medical Journal Editors (ICMJE) and the World Health Organization (WHO) consider it is important to promote a comprehensive and publicly available database of clinical studies.
4.5.2 The ICMJE defines a clinical study as any research project that prospectively refers human beings for intervention or simultaneous comparison or control groups to study the cause and effect relationship between a medical intervention and a health outcome. Medical interventions include medications, surgical procedures, devices, behavioral treatments, changes to healthcare processes, among others.
4.5.3 The International Journal of Cardiovascular Sciences recognizes and supports this initiative for the registration and international dissemination of information about clinical studies, in open access publishing. Therefore, effective from January 2015, only clinical studies that have received an identification number in one of the Clinical Trial Registers validated by the criteria established by the WHO and the ICMJE at http://www.icmje.org/faq.pdf will be accepted for publication.
4.5.4 Any registration in keeping with the ICMJE requirements will be accepted. A complete list of registrations of clinical studies is available at: http://www.who.int/ictrp/network/primary/en/index.html The registration number should be published at the end of the Abstract.
5.1 The manuscripts should be written in Portuguese and/or English. The IJCS will provide the translation into English/Portuguese without any costs to the author(s). The IJCS publishes manuscripts in Portuguese in hard copy and manuscripts in Portuguese and English online.
5.2 The manuscripts should be typed in Word for Windows, including Tables and Charts, in Arial font, size 12, 1.5 cm spacing, and justified. A4 or Letter format page.
5.3 The upper left margin should have 3 cm and the lower right margin should have 2 cm.
6.1 The instructions for organizing references are established in the Uniform Requirements for Manuscripts Submitted to Biomedical Journal Editors, Vancouver Standards. These are available at: http://www.onlineijcs.org>
6.2 General instructions
6.2.1 The IJCS uses the numerical system for indicating citations in the text, which recommends the use of sequence numbering, in superscript Arabic numerals, strictly in order of appearance in the text;
6.2.2 The abbreviations of publications should be
in keeping with the Index Medicus/Medline
found in the List of Journals Indexed or on the
following website: <http://www.nlm.nih.gov/pubs/libprog.html>
6.2.3 Any personal communications or any data that could not be consulted by the readers should not be cited in the text;
6.2.4 The references should be organized in numerical order of appearance in the text.
6.2.5 The references cited in the articles should be updated (last 5 years).
7.1 The rules for the organization of the manuscript illustrations are available at <http://www.onlineijcs.org>
7.2 Figures, Charts and Tables should be numbered in Arabic numerals, in sequential order of appearance and reference in the text.
7.3 General instructions
7.3.1 Tables: max 12 columns and 45 rows;
7.3.2 Charts: max 5 columns and 50 rows;
7.3.3 Figures: ≥ 300 dpi resolution and .jpeg or .tiff extension.
8.1 Original Manuscript (OM)
It reports original cardiovascular research studies.
8.1.1 Structure: coversheet, abstract, introduction, methods, results, discussion, conclusions and references.
8.1.2 The following limits should be ensured: up to 5 000 words; up to 250 words in the abstract; up to 40 references; up to 8 illustrations and 10 authors at the most.
8.1.3 Cover sheet: please refer to the mandatory information in item 4.2 and subitems in these instructions.
8.1.4 Abstract: it should be presented in a structured way, into Background, Objectives, Methods, Results, and Conclusions. References should not be cited in the abstract. The key words shown in the end of the Abstract should be taken from the Medical Subject Headings (MeSH) at <http://decs.bvs.br>, for the purposes of using a common terminology for research.
8.1.5 Introduction: Its purpose is to introduce the subject to the readers, drawing attention to the relevance of the subject studied, situating the subject in time, space and theory. The introduction is to be concluded by presenting the objectives of the manuscript. It should be concise.
8.1.6 Methods: Includes the characteristics of the study, a description of the population studied and its subgroups (patients), the selection criteria used, the methods connected to the research stages (devices, procedures, drugs used, etc.), the statistical treatment and ethical issues (see Item 4.3.4).
8.1.7 Results: These include the quantitative and qualitative data found in the research.
8.1.8 Discussion: It is directly connected to the results, which should be discussed in light of the literature, underlining the original and important aspects of the study, its implications for future studies, as well as its limitations.
8.1.9 Conclusions: These are deductions drawn from the results of the study or raised along the discussion of the subject.
8.1.10 Acknowledgements: These are optional, but whenever they are included in the study, they should be included just below the conclusions. They are generally addressed to those who significantly contributed to the production of the manuscript.
8.1.11 References: this a list of all authors cited in the text, according to applicable standards. It is mandatory. The standards adopted by the International Journal of Cardiovascular Sciences, according to the Standards of Vancouver, are described and exemplified at: <http://www.onlineijcs.org>. The general guidelines are in item 6 and subitems of these instructions.
8.2 Review Manuscript (RM)/Clinical Update (CU)
It conducts a systematic review of studies published, focusing on specific issues of Cardiology, with high methodological strictness and interpretation of results.
8.2.1 Review manuscripts will mostly stand as an invitation by the editor. Nonetheless, highlevel studies carried out by authors or groups with a history of publications in the area, will be welcome. As the case may be, reviews spontaneously submitted by the authors may be reclassified as “Clinical Updates” if they have any clinical interest, though with a more restrict impact potential.
8.2.2 Authors of review manuscripts should have a broad academic or publication background (PubMed or SciELO).
8.2.3 Structure: coversheet, abstract, introduction, development, references.
8.2.4 The abstract should have an informational nature and must be organized into a single paragraph. It should be followed by 3 to 6 keywords.
8.2.5 The following limits should be ensured: up to 6,500 words; up to 250 words in the abstract; up to 80 references; up to 8 illustrations and 8 authors at the most.
8.3 Preliminary Communication (PC)
A manuscript that covers the initial relevant results of clinical or experimental research. This includes the outline of clinical research studies.
8.3.1 Structure: coversheet, abstract, introduction, methods, results, discussion, conclusions and references.
8.3.2 The abstract should be structured around the following headings: Background, Objectives, Methods, Results, and Conclusions. It should be followed by 3 to 6 keywords.
8.3.3 The following limits should be ensured: up to 1,500 words; up to 250 words in the abstract; up to 10 references; up to 2 illustrations and 8 authors at the most.
8.4 Case Report (CR)
Case reports describe specific clinical cases that present relevant information or any information representing the originality of a given diagnosis or treatment, or illustrating situations that do not occur very often in the clinical practice and deserve a deeper understanding and more attention from cardiologists.
8.4.1 Structure: coversheet, abstract, introduction, case report, discussion and references.
8.4.2 The abstract should have an informational nature, and should be organized into a single paragraph. It should be followed by 3 to 6 keywords.
8.4.3 The following limits should be ensured: up to 1,500 words; up to 100 words in the abstract; up to 10 references; up to 2 illustrations and 6 authors at the most.
8.5 Point of View (PV)
The Point of View focuses on particular aspects of Cardiology, mainly those of a controversial nature, revealing the authors’ stance, grounded on their own experiences or the literature available, whenever possible.
8.5.1 Structure: coversheet, abstract, introduction, development, conclusions, references.
8.5.2 The abstract should have an informational nature, and should be organized into a single paragraph. It should be followed by 3 to 6 keywords.
8.5.3 The following limits should be ensured: up to 1,500 words; up to 100 words in the abstract; up to 10 references; up to 2 illustrations and 4 authors at the most.
8.6 Cardiovascular imaging (CI)
A manuscript that presents interesting aspects of imaging methods, including clinical imaging, basic research or, even, complementary tests. Emphasis should be given to the relevant aspects of pathophysiology, diagnosis or treatment that explain the mechanisms of cardiovascular diseases.
8.6.1 Structure: coversheet, abstract, introduction, development, conclusions and references.
8.6.2 The abstract should have an informational nature, and should be organized into a single paragraph. It should be followed by 3 to 6 keywords.
8.6.3 The following limits should be ensured: up to 1,000 words; up to 100 words in the abstract; up to 10 references; up to 4 illustrations and 4 authors at the most.
A manuscript that brings the journal’s opinion, reflecting a position regarding a given subject, and is usually written by a member of the editorial team.
8.7.1 The IJCS does not accept editorials spontaneously submitted; only those written upon invitation of the journal’s editor.
8.7.2 The presence of References is mandatory. It should be followed by 3 to 6 keywords.
8.7.3 The following limits should be ensured: up to 1,000 words; up to 10 references; up to 2 illustrations and 2 authors at the most.
8.8 Letter to the Editor
This is a manuscript that presents notes about subjects recently published. It may require a response from the author concerned or concise comments about some cardiovascular subject of collective interest.
8.8.1 The following limits should be ensured: up to 1,000 words; up to 10 references; up to 2 illustrations and 4 authors at the most.
The appropriate use of statistical methods, as well as their correct description, is of utmost importance to have your article published at the International Journal of Cardiovascular Sciences. Thus, the following general guidelines are presented to the authors on the information that must be provided in the article regarding the statistical analysis (for details, please read the statistical guidelines of the European Heart Journal).
About the sample:
- Provide details on both the population of interest and the procedures used to define the study sample.
In the Methods section, create a subsection exclusively dedicated to the description of the statistical analysis performed in the study, including:
- Presentation of continuous and/ or categorical variables: for continuous variables with normal distribution, mean and standard deviation should be used, whereas median and interquartile ranges should be used with those with non-normal distribution. As for categorical variables, they must be depicted as absolute numbers and percentages, with the respective confidence intervals;
- Description of the statistical methods used. When using more complex statistical methods, a literature reference must be provided for such methods;
- As a rule, statistical tests should always be two-sided, instead of one-sided;
- Level of statistical significance used; and
- Specification of the software used in the statistical analysis and its respective version. 3) Regarding the presentation of results after the statistical analysis:
- The main results should always be described with their respective confidence intervals;
- Do not repeat in the manuscript body data that have already been depicted in tables and figures;
- Rather than having very large tables, use charts alternatively to facilitate reading and understanding of the content;
- At the tables, even if the p value is non-significant, provide its respective value instead of "NS" (e.g., p = 0.29 instead of NS).
Chart 1: Limits allowed (no.) and structure of the manuscripts submitted for publication in the Int J Cardiovasc Sci.
|OM||5000||10||250||40||8||Coversheet – Abstract¹ – Introduction – Methods - Results – Discussion – Conclusions – References|
|RM/CU||6500||8||250||80||8||Coversheet – Abstract² – Introduction – Development – References|
|PC||1500||8||250||10||2||Coversheet – Abstract¹ – Introduction – Methods - Results – Discussion – Conclusions – References|
|CR||1500||6||100||10||2||Coversheet – Abstract² – Introduction– Case Report – Discussion – References|
|PV||1500||4||100||10||2||Coversheet – Abstract² – Introduction - Development – Conclusions –References|
|CI||1000||4||100||10||4||Coversheet – Abstract² – Introduction - Development – Conclusions –References|
|Editorial||1000||2||XX||10||2||One paragraph – References|
|Letter||1000||4||XX||10||2||One paragraph – Optional references|
OM = Original Manuscript; RM = Review Manuscript; AA = Clinical Update; CP = Preliminary Communication; CR = Case Report; PV = Point of View; CI = Cardiovascular Image
Abstract¹ - organized in a structured way around the following headers: Background – Objectives – Methods – Results – Conclusions
Abstract² - organized into a single paragraph