He confirmed he has asked Labour's Ann Clwyd, MP for the Cynon Valley, to examine how NHS hospitals could deal with complaints better in future.
In December, she criticised the care given to her late husband at Cardiff's University Hospital of Wales.
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Fire crews have been responding to reports of flash flooding in Carmarthenshire. Some homes have been affected.
Medication designed for animals was taken from the building in Abertillery on Thursday night.
More than a thousand riders will be taking part in a series of events in and around the town.