Supplementary material (additional text, tables and figures, no size limit) can be submitted for posting online with the pdf version of the article. There is a standard charge of 100€ as a composition fee, which will be invoiced at proof stage.

The material should be submitted at the same time as the rest of the manuscript, clearly labelled Online Supplementary Material. It will be peer reviewed in the same way as the rest of the manuscript.

All information included in the Online Supplementary Material should be carefully reviewed, as it will not be copyedited or proofread by IJTLD staff.