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Hospital services across a Welsh health board could be reorganised because they are so fragile.
Hywel Dda health board has included critical care, stroke services, eye care and urology among those in need of urgent attention.
Among the options would be to halve the number of acute stroke units and centralise planned urology cases and eye care.
A number of options will be given to the public, though the health board said it would welcome alternative suggestions as there was no preferred option.
It is understood each option put forward would come with a cost implication, but would be less than the current rising costs.