Erratum is an error that affects the veracity of the published paper, the reputation of the authors. Errata are published as a distinct article. An erratum should be published in the case of a serious mistake or a factual error or omission in the methods, results, or conclusions. To warrant an erratum the scientific error must be serious enough to affect the replication and interpretation of results.

Cases that warrant an erratum:

• A figure was not explained correctly.
• Incorrect results were included in a table.
• An author is accidentally missed out.

A notice of correction will be issued by PCDP to article and correct considerable errors that appear in online articles when these errors considerably affect the content or understanding of the work reported (e.g., error in data presentation) or when the error affects the publication’s metadata (e.g., misspelling of an author’s name). In these cases, PCDP will publish a correction that will be linked to the original article.

In exceptional circumstances, the PCDP reserves the right to remove a paper from PCDP online platforms. This may happen when:

• (i) PCDP has been advised that content is defamatory;
• (ii) It poses an immediate and serious risk to health if acted upon;
• (iii) Infringes a third party’s intellectual property right, right to privacy or another legal right.

The emergency takedown will be happened if:

• The paper includes the personal identifying information of an individual that lead to an individual being easily identified.
• The publication of a paper contains a photograph in which a particular individual can be identified;

An addendum is a notification to add information to a published paper. It should be noted that the addenda do not contradict the original publication and are not used to fix the error. For the errors, the PCDP will publish a correction notice. Actually, if the author needs to update or add some key information then, they can publish an addendum. According to the PCDP policies, the addenda may be peer-reviewed and are normally subject to oversight by the editor chief.