Preparing additional files

Although KSSTA does not restrict the length and quantity of data included in an article, we encourage authors to provide datasets, tables, movies, or other information as additional files.

Please note: All additional files will be published along with the article. Do not include files such as patient consent forms, certificates of language editing, or revised versions of the main manuscript document with tracked changes. Such files should be sent by email to, quoting the Manuscript ID number.

Results that would otherwise be indicated as “data not shown” can and should be included as additional files.

Supply all supplemental material in standard file formats. Please include in each file the following information: article title, journal name, author names; affiliation and e-mail address of the corresponding author. To accommodate user downloads, please keep in mind that larger-sized files may require longer download times and that some users may experience other problems during downloading.

Text and presentations should be submitted in .pdf format. Figures can also be combined in a .pdf file. Additional files can be in any format, and will be downloadable from the final published article as supplied by the author. We recommend .csv  or .xlsx rather than PDF for tabular data.

Certain supported file formats are recognised and can be displayed to the user in the browser. These include most video formats (for users with the Quicktime plugin), mini-websites prepared according to our guidelines, chemical structure files (MOL, PDB), geographic data files (KML).

If additional material is provided, please list the following information in a separate section of the manuscript text:

• File name (e.g. Additional file 1)

• File format including the correct file extension for example .pdf, .xls, .txt, .pptx (including name and a URL of an appropriate viewer if format is unusual)

• Title of data

• Description of data

Additional files should be named “Additional file 1” and so on and should be referenced explicitly by file name within the body of the article, e.g.

Video submission

Recommended video aspect ratio is 16:9 and format is .mp4. Maximum file size is 25 GB using Editorial Manager. Please keep in mind that larger files require longer upload times. At your discretion we recommend to re-edit your file size to a reasonable amount after final editing, preferebly without a significant comprimise in quality.

Overview of additional file formats

Ideally, file formats for additional files should not be platform-specific, and should be viewable using free or widely available tools. The following are examples of suitable formats.

• Additional documentation

• PDF (Adode Acrobat)

• Animations

• SWF (Shockwave Flash)

• Movies

• MP4 (MPEG 4)

• Tabular data

• XLS, XLSX (Excel Spreadsheet)

• CSV (Comma separated values)

As with figure files, files should be given the standard file extensions.