It is a hugely valuable contribution to our understanding, and we are grateful to Carl Foulkes and all those who worked to support him in the production of this report.
Mae'n gyfraniad hynod werthfawr i'n dealltwriaeth, ac rydym yn ddiolchgar i Carl Foulkes ac i bawb a weithiodd i'w gynorthwyo i lunio'r adroddiad hwn.