Dywedodd Paul Mears, ar ran Prif Weithredwyr Bwrdd Iechyd Prifysgol Cwm Taf Morgannwg, Bwrdd Iechyd Prifysgol Caerdydd a'r From a Bwrdd Iechyd Prifysgol Aneurin Bevan
Paul Mears, on behalf of the Chief Executives of Cwm Taf Morgannwg University Health Board, Cardiff and Vale University Health Board, Aneurin Bevan University Health Board, said: