Free care-plan tools

Citation identifier checker

Check whether a citation retains a DOI, PMID or stable URL without fabricating fields.

Nothing you enter is uploaded or saved. Do not enter names, record numbers, dates of birth, addresses, or other patient-identifying information.

Mark identifiers actually present

Method and source context

This tool checks only the named structure. It does not diagnose, recommend treatment, make a patient-specific decision, grade an assignment, or replace professional judgement.

PubMed user guide · National Library of Medicine. How PubMed search, identifiers and citation information work.