ScienceContemporaryEuropehigh confidence

A European fertility group has called for an international cap on sperm-donor contributions after some donor-conceived people discovered they have hundreds of biological siblings.

Notes on verification

Confirmed by ESHRE's own position paper (peer-reviewed/primary source via PubMed and Oxford Academic) plus independent secondary reporting from PET/progress.org.uk and Live Action, all consistent on the details. [tier=gold indep_score=0.838 clusters=4 claim_tier=notable]

Sources