Annals of Coloproctology (ACP) allows authors to submit preprints to the journal. A preprint refers to a version of a scholarly paper that precedes formal peer review and publication in a peer-reviewed scholarly journal. Submitting a preprint to ACP will not be considered as duplicate submission or publication. ACP advises authors to mention the existence of the preprint, along with its DOI, in the cover letter during the submission process. Failure to do so may result in a plagiarism check program (Similarity Check) flagging the submission for excessive duplication. The preprint will go through the same peer review process as any other submission. If accepted for publication, the authors are encouraged to update the preprint with a link to the published article in ACP, including the DOI. It is highly recommended that authors cite the published article in ACP instead of the preprint in their future submissions to other journals.