Medical Letter (MedLetter) is committed to preserving the accuracy, integrity, and reliability of the scholarly record. When errors or ethical concerns are identified, the journal takes appropriate action in accordance with the recommendations of the Committee on Publication Ethics (COPE) to ensure transparency and maintain public trust.

Corrections

The journal may publish a correction when:

• Minor errors affect the accuracy of the published article.

• Author names, affiliations, or funding information require amendment.

• Important information was unintentionally omitted.

Retractions

An article may be retracted if:

• Research findings are unreliable due to error or misconduct.

• Plagiarism or duplicate publication is confirmed.

• Data fabrication or falsification is identified.

• Serious ethical violations are discovered.

Editorial Process

The Editorial Office will:

• Conduct a fair and confidential investigation.

• Communicate with the authors when concerns arise.

• Follow COPE recommendations before making a final decision.

• Publish corrections or retraction notices that remain permanently linked to the original article.

Editorial Policy

Corrections, expressions of concern, and retractions are issued solely to maintain the integrity of the scientific record and are implemented in a transparent, timely, and ethical manner.