A group of doctors, researchers and cancer care campaigners are calling for a public inquiry into what they say is Southern DHB's failing colonoscopy service.
A scathing article by Professor Brian Cox and Doctor Phil Bagshaw in the Medical Journal a fortnight ago accused the Ministry of Health of allowing the DHB to join the national bowel screening programme before it was ready.
They claimed lives have been lost or shortened as a result.
As Timothy Brown reports, the pair - along with others - now believe the only way to address their concerns is through a public inquiry.