Authorship
All authors should have made substantial contributions to all of the following:
(1) the conception and design of the study, or acquisition of data, or analysis and interpretation of data
(2) drafting the article or revising it critically for important intellectual content
(3) final approval of the version to be submitted.
Declaration by authors
An author declaration form signed by all authors stating that they have seen and approved the paper and that the work has not been, and will not be, published elsewhere, should be sent by post to the Editorial Office.
Conflict of Interest
All authors must declare any conflicts of interest. Any potential conflict of interest that might constitute an embarrassment to any of the authors if it were not to be declared and were to emerge after publication should be declared. All authors must submit a statement of Conflict of Interest to be published at the end of their article. If no Conflict of Interest is declared, this will be stated in the article using the following wording: ‘Conflict of interest: none declared’
Online submission
Please go to the submission website for CRD Journal, and follow the instructions given on screen. First-time users must click ‘Register’ on the navigation menu, and enter the required information. The system will send you an automatic e-mail with your username and password.
Article Types
Original articles should be limited to 5,000 words and a maximum of 40 references.
Review articles should contain the most significant aspects and achievements in the reviewed scientific area. The review itself should not be a gathering of detailed information but present a summarization of critically selected and evaluated literature which should reflect the most important findings. Reviews should not exceed 5000 words, 5 figures, 5 tables and 150
references.
Brief Communications and Case Reports should be limited to 1,200 words (including text, references, figure legends, tables, figures, etc.) and 8 references. The abstract should not exceed 100 words.
Images should be submitted as one figure along with a descriptive text of no more than 300 words and 2 references. This category is intended for striking, illustrative, or rare single clinical images such as electrocardiograms, echocardiograms, tomograms, x-rays or pathology specimens. CRD Journal accepts video material and animation sequences to support and enhance your scientific research. Letters to the Editor regarding articles published in the Journal or current topics of interest are welcome. A letter should not exceed 1,000 words in length and must be limited to 3 authors and 5 references. Editorials should be limited to 1000 words including only one figure or table and 10 references.
Manuscript preparation
Title page
The title page should bear: (a) title, (b) name(s) of authors, (c) institution(s) where work was done, (d) addresses of all authors, (e) name of the corresponding author to whom proofs should be sent, with complete postal address, telephone and fax numbers, and e-mail details.
Abstracts and keywords
An abstract of maximum 250 words should be typed following the title page. The abstract should be structured under the headings (a) Background stating the rationale for the study, (b) Methods and Results, and (c) Conclusions, followed by a list of three to six keywords.
Text
The text should be arranged as follows: Title page, Structured Abstract and Keywords, Introduction, Methods, Results, Discussion, Acknowledgements, References, Tables, and Figure legends. References, figures and tables should be numbered in the order in which they are cited in the text. Please note that the Methods and Results within the manuscript file should be able to stand alone and should provide sufficient information for the reader to understand the basic methods of the study and to review the fundamental findings in a mechanistic way.
Acknowledgements
Acknowledgements and details of support in the form of grants, equipment or drugs are typed at the end of the text before References. Details of all funding sources for the work in question should be given in a separate section entitled ‘Funding’. This should appear before the ‘Acknowledgements’ section.
References
References are identified in the text by arabic numerals and numbered in the order cited. References are typed double spaced on sheets separate from the text in the Vancouver style. Complete information should be given for each reference, including title of article, abbreviated journal title and inclusive page numbers. Accuracy of reference data is the responsibility of the author. The first three authors should be listed, followed by et al.
Example:
Tse G, Lee S, Gong M, et al. Restitution metrics in Brugada syndrome: a systematic review and meta-analysis. J Interv Card Electrophysiol. 2020;57:319-327.
Tables
Tables are typed on separate sheets with the table number (in arabic numerals) and title above and any explanatory notes below.
Figure Legends
Legends should be included in the submitted manuscript as a separate section. Each figure legend should have a brief title that describes the entire figure without citing specific panels, followed by a description of each panel.
Figures
Electronically submitted figures should be in high resolution and in one of the following formats: tiff, bitmap (.bmp), jpeg (.jpg), portable data format (.pdf) or postscript (.ps or .eps). The resolution required for publication is 300-500 dpi. High quality video are encouraged.
Permissions
Permissions must be obtained from the publisher and/or author for the use of any nonoriginal material. A copy of the written permission should be submitted with the manuscript.
Experimental Ethics and Reporting
Studies should comply with the Declaration of Helsinki, and the research protocol must be approved by the locally appointed ethics committee. Informed consent must be obtained from the subjects (or their legally authorized representative). These facts must be stated in the manuscript. Authors should observe high standards with respect to publication ethics as set out by the Committee on Publication Ethics (COPE) and ICMJE recommendations for reporting about patients. Patients have a right to privacy that should not be infringed without prior informed consent.
Copyright
Upon acceptance of an article, authors will be asked to complete a ‘Journal Publishing Agreement’. An e-mail will be sent to the corresponding author confirming receipt of the manuscript together with a ‘Journal Publishing Agreement’ form or a link to the online version of this agreement.
Publication fees
There is no charge for manuscripts submitted and published in CRD Journal.

