Primary-source provenance

Data Sources

HRD builds on public research infrastructure and links every indexed record back to its source.

PubMed

Publication metadata

PubMed supplies identifiers, titles, authors, journals, publication types, MeSH headings and other bibliographic metadata. HRD does not republish full journal articles.

ClinicalTrials.gov

Registered trial metadata

ClinicalTrials.gov supplies protocol titles, recruitment status, enrollment, interventions, conditions and dates. Registry information can change and does not establish results.

Cadence

Twice-weekly refresh

The automated updater runs Mondays and Thursdays. Visible timestamps report when the current source search was executed.