General surgeons are often asked to see patients with pain from gallstones.

NEWYORKER: The Cost Conundrum

It revealed that nearly three quarters of consultant general surgeons are working up to double their contracted hours because of changing work patterns and increased patient demand.

BBC: Risk from overworked surgeons

"At every step of the way, the company carefully considered the data on ASR and actively engaged with surgeons about their general feedback on the ASR system, " he told BBC News.

BBC: Andrew Robathan