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Supplementary materials

Material that is not essential to understanding or supporting a manuscript, but which may nonetheless be relevant or interesting to readers, may be submitted as supplementary material. Supplementary material will be published online alongside your article, but will not be published in the pages of the journal. Types of supplementary material may include, but are not limited to, appendices, additional tables or figures, datasets, videos, and sound files.

Supplementary materials will not be typeset or copyedited, so should be supplied exactly as they are to appear online. Please see our general guidance on supplementary materials for further information.

Where relevant we encourage authors to publish additional qualitative or quantitative research outputs in an appropriate repository, and cite these in manuscripts.

Author affiliations

Author affiliations should represent the institution(s) at which the research presented was conducted and/or supported and/or approved. For non-research content, any affiliations should represent the institution(s) with which each author is currently affiliated. 

For more information, please see our author affiliation policy and author affiliation FAQs.

Acknowledgements

Authors can use this section to acknowledge and thank colleagues, institutions, workshop organisers, family members, etc. that have helped with the research and/or writing process. 

Submission of a funding statement declaring any type of funding information or financial support is mandatory, even if there is no funding to declare. This should be listed under ‘Financial Support’ rather than Acknowledgements so that it can be recorded separately (see here).

We are aware that authors sometimes receive assistance from technical writers, language editors, artificial intelligence (AI) tools, and/or writing agencies in drafting manuscripts for publication. Such assistance must be noted in the cover letter and in the Acknowledgements section, along with a declaration that the author(s) are entirely responsible for the scientific content of the paper and that the paper adheres to the journal’s authorship policy. Failure to acknowledge assistance from technical writers, language editors, AI tools and/or writing agencies in drafting manuscripts for publication in the cover letter and in the Acknowledgements section may lead to disqualification of the paper. Examples of how to acknowledge assistance in drafting manuscripts:

  • "The author(s) thank [name and qualifications] of [company, city, country] for providing [medical/technical/language] writing support/editorial support [specify and/or expand as appropriate], which was funded by [sponsor, city, country]."
  • "The author(s) made use of [AI system/tool] to assist with the drafting of this article. [AI version details] was accessed/obtained from [source details] and used with/without modification [specify and/or expand as appropriate] on [date(s)]."

Competing Interests

All authors must include a competing interest declaration during the submission process. This declaration will be subject to editorial review and will be published in the article. If your paper is accepted, you will be asked to provide a 'title page' to accompany the final version of your paper, which must include a competing interest declaration as well as a funding statement. Please see the section on Disclosure of interests and funding here for more information.

Competing interests are situations that could be perceived to exert an undue influence on the content or publication of an author’s work. They may include, but are not limited to, financial, professional, contractual or personal relationships or situations.

If the manuscript has multiple authors, the author submitting must include competing interest declarations relevant to all contributing authors.

Example wording for a declaration is as follows: “Competing interests: Author 1 is employed at organisation A, Author 2 is on the Board of company B and is a member of organisation C. Author 3 has received grants from company D.” If no competing interests exist, the declaration should state “Competing interests: The author(s) declare none”.