Letter: Balancing leukaemia figures

From Dr Arthur Tarrant

Sir: In your article on "pylon cancer" you mention the case of three leukaemia sufferers who live next to a railway with overhead wires.

These wires are energised at 25,000 volts, which is the voltage used on the cathode-ray tubes of colour television sets. How is it that we do not all get leukaemia?

Yours faithfully,

Arthur Tarrant

Twickenham, Middlesex