Authors' reply (Denmark)

EDITOR,--In regard to Alasdair Philips's first point, all inhabitants of industrialised nations are exposed to some extent to magnetic fields in the 50 Hz range, but people who live close to 50-400 kV power lines and substations have prolonged, uniform exposure to field levels clearly above the average. Electricity distribution installations below 50 kV were not included in our study. In Denmark, lines at these levels are either buried or constructed as three phase, symmetrical overhead lines. Therefore, unlike certain other countries (such …