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Submit - Instruction for authors

Edited January 2022

The Danish Medical Journal (DMJ) is a general medical journal published by The Danish Medical Association. DMJ is published monthly 12 times a year.
The current Impact Factor is 1,24.

DMJ will publish the following articles: 

  • Original articles
  • Brief research reports
  • Protocol articles
  • Systematic reviews
  • Review articles (only by editorial invitation)
  • Meta-analyses
  • Letters

Publication in the Danish Medical Journal is mainly for members of the Danish Medical Association. Consequently, we offer an editorial process and peer review if at least one of the authors is a member of the Danish Medical Association. The publication fee for non-members is 1,000 euro.

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Submission of manuscripts
Papers should be submitted through the electronic manuscript system at
http://mc.manuscriptcentral.com/ugeskriftet.
Please note in the submission coverletter that the paper is intended for the DMJ. 
 

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Authorship
Authors should fulfil all four criteria for authorship set by the ICMJE-group (http://www.icmje.org/). This has to be stated in the authorship declaration and should be submitted with the article.

Authorship credit should be based on that all authors meet all four authorship criteria as provided by the Vancouver rules / ICMJE:

  1. Substantial contributions to: the conception or design of the work; or the acquisition, analysis, or interpretation of data for the work.
  2. Drafting the work or revising it critically for important intellectual content.
  3. Final approval of the version to be published.
  4. Agreement to be accountable for all aspects of the work in ensuring that questions related to the accuracy or integrity of any part of the work are appropriately investigated and resolved.

Peer review
All manuscripts are double blinded peer reviewed. All submitted manuscript must be anonymous. 

Copyright
Articles published in the Danish Medical Journal are “open access”. This means that the articles are distributed under the terms of the Creative Commons Attribution Non-commercial License, which permits any non-commercial use, distribution, and reproduction in any medium, provided the original author(s) and source are credited.

 

Conflicts of interest
New ICMJE Disclosure Form per February 2021. For further information: www.icmje.orgEarlier versions of the ICMJE Disclosure will not be accepted for new submissions after 30 June 2021.

Any conflicts of interests for the submitted paper in the form of an ICMJE Disclosure Form should be submitted for each author of the paper. These forms should be sent with the article and can be uploaded in Manuscript Central when submitting a new manuscript.

ICMJE coi_disclosure - UFL-DMJ (new) Please save the disclosure form as PDF before submitting it to Danish Medical Journal.

Trial registration
All trials, which include human subjects / intervention on humans (randomized clinical trials), should be registered on an open web-site such as e.g. www.clinicaltrials.gov. The registration number should be included in the abstract of the original article or protocol article after “funding” as well as in the methods section in the paper.

Trial registration is not relevant in a descriptive or retrospective study, and you should write "Not Relevant".

Data Sharing Plan for Clinical Trials

  • As of 1 July 2018 manuscripts submitted to ICMJE journals (incl. Danish Medical Journal) that report the results of clinical trials must contain a data sharing statement as described below.
  • Clinical trials that begin enrolling participants on or after 1 January 2019 must include a data sharing plan in the trial's registration.

Please note that you sign the latest version of Authorship Declaration - in which you confirm the above.
You can download it here: Authorship Declaration - Danish Medical Journal.

The ICMJE's policy regarding trial registration is explained on ICMJE.org website: http://www.icmje.org/recommendations/browse/publishing-and-editorial-issues/clinical-trial-registration.html#one. If the data sharing plan changes after registration this should be reflected in the statement submitted and published with the manuscript, and updated in the registry record.

The ICMJE’s data sharing statement policy is detailed in an editorial (see Updates and Editorials - http://www.icmje.org/update.html).

Also read the editorial »Data Sharing Statements for Clinical Trials: A Requirement of the International Committee of Medical Journal Editors« published in June 2017 (in Danish): http://ugeskriftet.dk/videnskab/statement-deling-af-kliniske-data-et-krav-fra-international-committee-medical-journal

Data sharing statement
Data sharing statements must indicate the following:

  • whether individual deidentified participant data (including data dictionaries) will be shared;
  • what data in particular will be shared;
  • whether additional, related documents will be available (e.g., study protocol, statistical analysis plan, etc.);
  • when the data will become available and for how long;
  • by what access criteria data will be shared (including with whom, for what types of analyses,
  • and by what mechanism).

Read more and find an example of Data Sharing Statements That Fulfill These ICMJE Requirements (http://www.icmje.org/recommendations/browse/publishing-and-editorial-issues/clinical-trial-registration.html).

Title page
Must be submitted with all manuscript, including:

  • All the authors full names, affiliations (department and institution) - in the order in which they should appear in the published article.
  • Corresponding authors name and e-mail address as it should appear in the published article.
  • Aknowledgements can be inserted here - or in the authorship declaration. Aknowledgement should not appear in the manuscript.

All manuscripts must be anonymous.

Figures and tables
When presenting exact data use a table, whereas a graph is more adequate when the aim is to illustrate a tendency. Avoid three-dimensional presentations. Do not present your data twice (e.g. in text and table or figure). Illustrations should be submitted in the original format, e.g. as PowerPoint or Excel files and pictures in jpg or tiff format. All illustrations should be submitted as separate files. If an illustration has been published before, we need a written permission from the copyright holder if the illustration is going to be reproduced in your article. We strongly encourage the submission of illustrations including photographs. 

References
The list of references should be performed according to the guidelines stated by the ICMJE-group (www.icmje.org).  Specified here: https://www.nlm.nih.gov/bsd/uniform_requirements.html

The recommended style from ICMJE is NLM (National Library of Medicine) - but Danish Medical Journal recommend the AMA style (JAMA - American Medical Association) since following exceptions from NLM apply to DMJ:

  • If there are more than three authors on a given publication, the first three authors should be stated in the reference list followed by “et al.” For a total of four authors, you are allowed to list all four.
  • Do not add database unique identifiers, such as the PubMed PMID or DOI to the reference. Do not add publication dates.

Journal titles should be abbreviated according to MEDLINE (http://www.nlm.nih.gov/).

References should be numbered consecutively throughout the text with numbers in square brackets ( [x] ).

 Examples:

  1. Gögenur I, Kücükakin B, Bisgaard T, et al. The effect of melatonin on sleep quality after laparoscopic cholecystectomy: a randomized placebo-controlled trial. Anesth Analg. 2009;108:1152-6.
  2. Kornholt J, Christensen MB. Prevalence of polypharmacy in Denmark. Dan Med J. 2020;67(6):A12190680.
  3. Gadeberg MN, Cramer A, Hölmic P, Barfod KW. Validity of sports-related diagnosis codes in the Danish National Patient Register. Dan Med J. 2021;68(3):A08200580.

Preprints as references
*) From medRxiv: Preprints are preliminary reports of work that have not been certified by peer review. They should not be relied on to guide clinical practice or health-related behavior and should not be reported in news media as established information.

  • The Journal of the Danish Medical Association/Danish Medical Journal recommends that references to preprints are not made, c.f. common practice that clinical recommendations and guidelines do not refer to preprints.
  • Manuscripts uploaded to a preprint server have not yet been peer reviewed and are not necessarily guaranteed peer review process etc.
  • Consequently, a reference to a preprint manuscript should only be made if highly necessary.
  • If a reference is made to a preprint manuscript it should be clearly indicated in the reference list – see examples below.
  • It is the responsibility of the author that the reference is continuously updated as long as the manuscript is being editorial processed at The Journal of the Danish Medical Association/Danish Medical Journal.
  • Manuscripts uploaded to a recognised preprint server (for instance medRxiv and SRRN), will typically be given a reference or a DOI, and the history and the status of the manuscript can be followed at the server regardless of whether it is accepted for publication in a journal, rejected or withdrawn.
  • The reference for a preprint manuscript cannot be altered once the submitted manuscript is accepted in proof at Journal of the Danish Medical Association/Danish Medical Journal.

Examples of preprint references:

  1. Bonde J, Ejegod D, Pedersen H, et al. Clinical validation of point-of-care SARS-COV-2 BD Veritor antigen test by a single throat swab for rapid COVID-19 status on hospital patients predominantly without overt COVID symptoms. medRxiv 2021.04.12.21255299; doi: https://doi.org/10.1101/2021.04.12.21255299 (preprint 9. jun 2021).
  2. Lees J, Bart F, Kremer PHC, et al. Joint sequencing of human and pathogen genomes reveals the genetics of pneumococcal meningitis. Available at SSRN: http://dx.doi.org/10.2139/ssrn.3231844 (preprint: 1. sep 2018).

For further details you can go to the Danish instruction for authors - Manuskriptvejledning for Ugeskrift for Læger

Supplementary material 
We accept supplementary material (SM) in connection with scientific articles published in the Danish Medical Journal (DMJ). SM may be questionnaires and answer forms, videos, extended tables etc.

If necessary, contact DMJ for upload of video material.

  • Supplementary material (SM) must follow the manuscript through the full peer review process and must be visible for editor and reviewer.
  • The article should contain clear reference(s) to the pages/numbers of the SM. When the final manuscript is accepted, the editoral office will insert links with reference to the SM.
  • SM should be submitted as one PDF clearly indicating to which article it relates – either on the front page or in the header/footer.
  • Make sure that the SM is readable and understandable. The nomenclature in the manuscript and in the SM should be identical. It should be clearly stated in the SM what the tables/figures etc. illustrate.
  • Guidelines for the SM are the same as for the rest of the content of DMJ:
    • no product names or trademarks (use generic names)
    • correct listing of the literature list
    • patient consent if relevant
    • observation of copy right etc.
  • There will be no proof reading of the SM.
  • There will be no graphic design of figures/tables.
  • DMJ takes no responsibility for the SM – this goes for the content as well as the indefinite availability.

 

TYPES OF ARTICLES

Original articles 

  • Titlepage, Authorship Declaration and ICMJE Disclosures.
  • Maximum size: 14,000 units including spaces but without references, figures and tables.
  • Maximum 20 references.
  • The English abstract should maximum contain 1,600 units including spaces.
  • The abstract should be structured and include the six sections: Introduction, Methods, Results, Conclusion, Funding and Trial registration.
  • An original article can contain up to four figures and tables.

All manuscripts submitted to ICMJE journals (incl. Danish Medical Journal) that report the results of clinical trials must contain a data sharing statement as described above.

Clinical trials that begin enrolling participants on or after 1 January 2019 must include a data sharing plan in the trial's registration.

Original articles reporting a randomized controlled trial should follow the CONSORT guideline (see below).

 

Brief research reports
A brief research report is typically the reporting of preliminary data, short reports of original research, case series or studies and presentation that may be limited in their scope.

  • Titlepage, Authorship Declaration and ICMJE Disclosures.
  • Maximum size: 7,500 units including spaces excluding references, figures and tables.
  • Maximum 20 references.
  • The English abstract should maximum contain 1,600 units including spaces.
  • The abstract should be structured and include the sections: Introduction, Methods, Results, Conclusion, Funding and Trial registration.
  • A brief research report can contain up to two figures or tables.

Clinical trials that begin enrolling participants on or after 1 January 2019 must include a data sharing plan in the trial's registration.

Research reports reporting a randomized controlled trial should follow the CONSORT guideline (see below).

 

Protocol articles
A protocol article has introduction, methods, and discussion sections, but focus is especially on the methods section and the plan for statistical analyses. We will consider protocol articles descibing large, randomized clinical trials and large epidemiological studies.

  • Titlepage, Authorship Declaration and ICMJE Disclosures.
  • Maximum size: 14,000 units including spaces but without references, figures and tables.
  • Maximum 20 references.
  • The abstract should maximum contain 1,600 units including spaces.
  • The abstract should be structured and include the sections: Introduction, Methods, Conclusion, Funding and Trial registration.
  • A protocol article can contain up to four figures and tables.

All manuscripts submitted to ICMJE journals (incl. Danish Medical Journal) that report the results of clinical trials must contain a data sharing statement as described above.

Clinical trials that begin enrolling participants on or after 1 January 2019 must include a data sharing plan in the trial's registration.

 

Systematic reviews and Meta-analyses

  • Titlepage, Authorship Declaration and ICMJE Disclosures.
  • Maximum size: 20,000 units including spaces but without references, figures and tables.
  • Maximum 80 references, but we appreciate low numbers.
  • Maximum four figures and tables.
  • The abstract must not exceed 1,600 units in length including spaces. The abstract should be structured and include the sections: Introduction, Methods, Results, Conclusion. 
  • The article should include a textbox with 3-4 key messages from the paper written in short sentences as a bullet list. Maximum 3-400 units in total.
  • The words “systematic review” or “meta-analysis” should be added to the title in order to get proper indexing in PubMed. Systematic reviews and meta-analyses should be reported according to the PRISMA guidelines (see below).

 

Review articles (only by editorial invitation)
Narrative review articles on an evolving topic of general interest for clinicians in the Nordic countries. This article type requires an editorial invitation. Inquiry for invitation can be sent by e-mail to dmj@dadl.dk – att: Editor in Chief.

  • Titlepage, Authorship Declaration and ICMJE Disclosures.
  • Maximum size: 14,000 units including spaces excluding references, figures and tables.
  • Maximum 50 references, but we appreciate low numbers.
  • Maximum four figures and tables.
  • The abstract must not exceed 600 units in length including spaces. The abstract should not be structured.
  • The article should include a textbox with 3-4 key messages from the paper written in short sentences as a bullet list. Maximum 3-400 units in total.
  • The words “a review article” should be added to the title to get proper indexing in PubMed.

 

Letters
Letters are comments on material published in Danish Medical Journal, or other topics of interest to the readers of the Danish Medical Journal (DMJ). Your post should be clear and compelling. It should appeal to both the Danish and the international readership of doctors and other health professionals. Letters should address topics within the areas medicine, healthcare, publishing, or an issue which will interest doctors. The content should be relevant and current.

Letters are submitted by e-mail to dmj@dadl.dk att: Letters

  • Comments may be related to recently published articles or letters in the DMJ.
  • All submitted Letters will be peer reviewed by the editorial board of the DMJ. The Letter can be returned for revision if the editorial board has any comments. The DMJ reserves the right to reject submissions.
  • All accepted Letters are edited, and proofs will be sent to authors before publication.
  • Letters will be indexed in PubMed.
  • Letters are published online and in full open access on www.ugeskriftet.dk/dmj (www.danmedj.dk).

Limits for Letters:

  • 500 words or 3,750 units incl. spaces.
  • One table or figure.
  • The number of references should not exceed 5.
  • The number of authors should not exceed 5.
  • Please include a title page giving the names, addresses and affiliations of all the authors as well as the e-mail address and phone number of the corresponding author.
  • ICMJE Disclosures should be provided for all authors.
  • Authorship Declaration should be provided signed by all authors.

 

 

ATTACHED FILES / FORMS

Authorship Declaration - Danish Medical Journal 
ICMJE coi_disclosure - UFL-DMJ (word-file)
Please save the disclosure form as PDF before submitting it to Danish Medical Journal.

CONSORT guidelines
PRISMA guidelines

About Data Sharing Statement: http://www.icmje.org/recommendations/browse/publishing-and-editorial-issues/clinical-trial-registration.html#one.

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Editorial office:
Danish Medical Journal 
Kristianiagade 12 | DK-2100 Copenhagen OE. Denmark.
Phone: +45 3544 8270. E-mail: dmj@dadl.dk

Published by
The Danish Medical Association
Kristianiagade 12, DK-2100 Copenhagen OE. Denmark
Phone +45 35 44 85 00 | dmj@dadl.dk

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