I. Type of Articles
We accept manuscripts in the following categories as detailed below: (i) Full Length Articles; (ii) Short Communications; (iii) View & Review; (iv) Clinical Research Design and (v) Letter to the Editor.
Full Length Articles
Full length articles are reports of original research on its overall size. Maximum length is 4000 words, not including abstract, figure legends, table legends and references. These articles require a structured abstract of 250 words at most. 40 references and 5 figures OR tables are allowed. Authors should cite only the best references, since multiple citations for a single point are usually duplicative, and avoid citing non-peer reviewed articles. Additional content may be submitted and published at the editor’s discretion.
Short Communications are abbreviated reports, which contain no more than 1250 words (excluding references), have no abstract, only 1 table or figure and 7 references or less.
View & Review
View and review articles are a review or an opinion statement that constists on a summary of the most relevant information on a topic. They should not exceed 5000 words, excluding references and an abstract that is at most 250 words. References should cite the most important papers on the subject (not more than 60). Up to 6 figures are allowed. Principles and Practice of Clinical Research also accepts manuscripts proposing medical hypothesis. We also encourage submission of mini-review, that is a short review with up to 1500 words to discuss concisely a novel idea.
Clinical Research Design
We encourage and accept articles reporting the methodology of well-designed trials. This type of article should have no more than 3000 words, a structured abstract and only 1 table or figure and 25 references or less. For clinical research design manuscripts, authors should make clear in the manuscript the limitations and strengths of the chosen design.
Letter to the Editor
Letter to the editor consists on brief comments regarding aspects in response to specific published articles or also to report important preliminary data. They should have a maximum of 600 words, with no more than 5 references.
II. Ethics in publishing
Principles and Practice of Clinical Research adheres to the guidelines regarding authorship set by the International Committee of Medical Journal Editors. Authors must meet all of the following criteria: (1) contributing to the conception and design, or analyzing and interpreting data; (2) drafting the article or revising it critically for important intellectual content; and (3) approving the final version to be published. Supporting the study or collecting data does not constitute authorship. Authorship based solely on position (e.g., research supervisor, department head) is not permitted.
Plagiarism clearly occurs when large portions of text are cut-and-pasted (such manuscripts would not be accepted for publication) and will not be accepted.
Conflict of interest
All authors are requested to disclose any actual or potential conflict of interest including any financial, personal or other relationships with other people or organizations within three years of beginning the submitted work that could inappropriately influence, or be perceived to influence, their work. Please download the COI form from ICMJE (link: http://www.icmje.org/conflicts-of-interest/). Each author should fill out that form and all the forms need to be submitted together or as separate files.
Please submit your manuscript and accompanying files using the website submission system. You need to create an user before and then click on new submission. Make sure you upload all the files as explained below and in the instructions to authors. If you have any questions please contact by email at email@example.com. The files that should be submitted are (i) Manuscript with figures and tables after references; (ii) cover letter; (iii) supplementary files (if needed).
IV. Structure of the paper
Principles and Practice of Clinical Research Journal follows the publication format developed by the American Psychological Association. Please see this tutorial, before submitting your paper to Principles and Practice of Clinical Research: http://www.apastyle.org/learn/tutorials/basics-tutorial.aspx.
1. Title page
Concise and informative. Avoid abbreviations and formulae whenever possible.
b) Author names and affiliations.
Where the family name may be ambiguous, please indicate this clearly. Present the authors' affiliation addresses (where the actual work was done) below the names and indicate all affiliations with a lower-case superscript letter immediately after the author's name and in front of the appropriate address. Provide the full postal address of each affiliation, including the country name and, if available, the e-mail address of each author.
c) Corresponding author
Clearly indicate who will handle correspondence at all stages of refereeing and publication, also post-publication. Ensure that phone numbers (with country and area code) are provided in addition to the e-mail address and the complete postal address. Contact details must be kept up to date by the corresponding author.
The abstract should state concisely the purpose of the research, the principal results and major conclusions. An abstract is often presented separately from the article, so it must be able to stand alone. Authors should avoid references, citing name(s) and year(s) only when essential. Also, non-standard or uncommon abbreviations should be avoided, but if necessary they must be defined at their first mention in the abstract itself.
Immediately after the abstract, provide 6 keywords or less, which will be used for indexing purposes. Authors should use American spelling and avoid general and plural terms and multiple concepts (avoid, for example, 'and', 'of'). Be moderate with abbreviations: only abbreviations firmly established in the field are eligible.
Define abbreviations that are not standard in this field in a footnote to be placed on the first page of the article. Ensure that there is a consistent pattern of abbreviations throughout the article. Superscript Arabic numerals are used for such footnotes.
Present the objectives of the paper and state an adequate background, avoiding a detailed literature survey or a summary of the results.
6. Material and methods
Provide sufficient detail to allow the work to be reproduced. Methods already published should be indicated by a reference: only relevant modifications should be described.
Results should be clear and concise.
The discussion does not repeat the results of the work, but explores its significance. Frequently, a combined Results and Discussion section is appropriate. Avoid extensive citations and discussion of published literature.
The main conclusions of the paper should be presented in a short Conclusions section, which may stand alone or form a subsection of a Discussion /Results and Discussion section.
If there is more than one appendix, they should be identified as A, B, etc. Formulae and equations in appendices should be given separate numbering: Eq. (A.1), Eq. (A.2), etc.; in a subsequent appendix, Eq. (B.1) and so on. Similarly for tables and figures: Table A.1; Fig. A.1, etc.
We use the reference format of APA - please see tutorial from APA: http://www.apastyle.org/learn/tutorials/basics-tutorial.aspx. Authors should cite only papers directly related to the article, avoiding exhaustive lists. APA guidelines for referencing are explained below:
- Reference should be organized as:
Brunoni, A. R., Valiengo, L., Baccaro, A., Zanao, T. A., de Oliveira, J. F., Goulart, A., ... & Fregni, F. (2013). The sertraline vs electrical current therapy for treating depression clinical study: results from a factorial, randomized, controlled trial. JAMA Psychiatry, 70(4), 383-391.
This section cannot be included on the title page, as a footnote to the title or otherwise. In a separate section at the end of the paper, before the references, authors should list the individuals who provided help during the research.
13. Publication Language
As Principles and Practice of Clinical Research is an international journal, the official language is English. Authors who are not native English speakers are advised to seek help from native speakers or submit their work for professional copyediting before submission. There are several professional companies that offer these services. One that is recommended is http://www.bluepencilscience.com/. A manuscript that is poorly written may not be accepted or authors may be asked to seek professional help.
Principles and Practice of Clinical Research journal does not require authors to transfer copyrights; however we use the creative commons license (Creative Commons Attribution-NonCommercial-ShareAlike (CC BY-NC-SA) in articles published in the journal. Please go to https://creativecommons.org/share-your-work/licensing-types-examples/ to check for more details.