Welsh NHS is improving, says chief David Sissling
The Welsh NHS is "improving rapidly" after a year of difficulties, said its chief executive.
David Sissling said that the Welsh government had provided additional support which had resulted in improvements.
He said he was "impatient" to see further improvement across all health boards in Wales.
But BBC Wales has also learned of Welsh government concerns over hospital performance during August.
BBC Wales health correspondent Owain Clarke met Mr Sissling to discuss the situation.