Editorial policy

Correct the record.

A correction must remain traceable to the source, the affected record, and the action taken.

Corrections and retractions

Source-reported corrections and retractions remain visible. A materially changed source produces a new prepared record version. Unresolved identity, provenance, or safety concerns close the indexing gate.

Rights and removal

Noodle reviews rights for each prepared record and the exact text displayed. Unknown, expired, disputed, or revoked rights close the indexing gate. A verified rights concern can remove a URL from the sitemap or return a noindex, 404, or 410 response. The canonical Literature Corpus remains unchanged.

Disputed claims

Noodle preserves the source record and the provenance of supported relationships. A study is labelled as confirming, contradicting, or supporting another study only when a separately governed, source-backed relationship supplies that stance.

Report a problem

Send the PMID or canonical URL, the affected field, the authoritative correction or rights evidence, the requested outcome, and a contact address to contact@helena.bio. Do not send patient or clinical data.