Supplementary Content

Supplementary content includes supporting material that is not essential to understanding the conclusions of the research but contains information that is additional or complementary and directly relevant. This material is considered to form an integral part of the text and is subject to peer review and to the same ethical standards, warranties, and conditions of submission. The inclusion of supplementary content is at the discretion of the Editor-in-Chief, whose decision on its relevance and appropriateness, guided where necessary by reviewers' comments, is final.

All material to be considered as supplementary content must be clearly indicated as such and should be uploaded at the same time as the initial submission. It must be referred to in the manuscript at an appropriate point in the text.

Supplementary materials are published as open access files and are hyperlinked from the published article. See the links below for information on preparing supplementary content.

Appendices, Catalogues, Large Data Sets

These are published as PDF files and should be uploaded as individual MS Word files following initital submission instructions. Each file should be named "Online Appendix 1," "Online Appendix 2," etc., regardless of format, and referred to as such at the appropriate place in the manuscript text.


  • A maximum of 20 additional figures may be posted in an AJA Image Gallery as thumbnails and in a collated PDF. Figures should be no bigger than 6 x 4 inches (15 x 10 cm) x 300 dpi and should be uploaded as individual figure files (.tif, .psd, .jpg, .eps, .bmp, .ai) labeled "Online Fig. 1," "Online Fig. 2," etc. Color figures are recommended. 
  • Image Gallery figures should be numbered independent of print-published figures and be cited consecutively at the appropriate place in the manuscript text. A MS Word file listing the online figure numbers and captions, with all necessary source credits, should be included with the initial submission.

Audio and Video Files

Most audio and video formats are accepted. Use compressed formats where this can be done without compromising quality. Contact with any questions.