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It was only when by chance she shared a taxi in Moscow with violinist Gidon Kremer in the late 1970s that her life changed.

The family was lucky to hear about an experimental trial being carried out in London - just by chance - when they were at a conference about the eye condition.

He became a TV writer almost by chance.

Instead he was home after a doctor's appointment and it was only by chance that he spotted a pair of feet on the ground in his back garden.

Mr Whiting, whose sister is a police officer, said he was only there by chance after taking his girlfriend to the A&E unit at nearby Warrington Hospital.