Bron dair blynedd ar ôl cyflwyno Gweithio i Wella, ym mis Chwefror 2014, comisiynwyd adolygiad gennyf o'r ffordd y mae'r GIG yng Nghymru yn ymateb i bryderon a chwynion i ystyried pa mor effeithiol y mae'r trefniadau hyn yn gweithio.
Almost three years on from the introduction of Putting Things Right, in February 2014, I commissioned a review of the way in which the NHS in Wales responds to concerns and complaints to consider how effectively these arrangements are working.