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Acknowledgement Head, Financial Disclosure Head, Competing Interests Head, Author Contributions Head

Each of these styles is used for a heading of the appropriate section. In each case, it is not required to have a heading paragraph. However, if there is a heading, it should be presented as a separate paragraph styled as Acknowledgement Head, Financial Disclosure Head, Competing Interests Head, or Author Contributions Head rather than as a run-in head to the main note paragraph. The wording of the title does not need to match the name of the style, e.g. the Competing Interests Head paragraph might contain the text "Conflicts of interest".

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• Acknowledgement: Textual material that names the parties who the author wishes to thank or recognize for their assistance in, for example, producing the work, funding the work, inspiring the work, or assisting in the research on which the work is based.
• Financial Disclosure: Statement of funding or denial of funds received in support of the research on which an article is based.
• Competing Interests: Conflict of interest statements that detail connections, financial or otherwise, between the author(s) and other organizations that might potentially benefit financially or otherwise from the outcome of the research.
• Author Contributions: Details of the particular elements of the study that were the responsibility of a particular author(s).

Notes Note that the last of these elements, Author Contributions, is mapped to the <front> part of the document in the XML, within the <author-notes> element of the <article-meta>, whereas the remaining elements are mapped to the <back>.

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