An elderly woman has died after she had a cardiac arrest at a dentist.
Ambulance crews and police were called to Watling Street in Radlett on Wednesday morning after a lady in her 80's collapsed.
A rapid response vehicle, a number of ambulances, and an ambulance officer were all called at 10.30am.
Despite the efforts of the paramedics, the woman died at the scene.
The East of England Ambulance service has confirmed that next of kin are aware.
Witnesses reported seeing a large number of emergency vehicles in the street.
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