Bum mlynedd yn union i heddiw arweiniodd Cymru'r ffordd trwy cyflwyno system feddal o optio allan ar gyfer rhoi organau, lle y rhoddwyd caniatâd tybiedig ar gyfer rhoi organau oni bai bod y person wedi optio allan.
Five years ago today Wales led the way in the UK by introducing a soft opt-out system of organ donation, where presumed consent was given for organ donation unless the person had opted out.