The Author Replies Below

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Perry F.S. , Pearl L. Health effects of ELF fields and illness in multistorey blocks. Public Health 1988; 102: 11–18

Tomenius L. Electrical constructions and 50 Hz magnetic fields at the dwellings of tumour cases (0–18 years) in the county of Stockholm. International Symposium, Prague, 1982

Eckert E. Plotzlicher und unerwarteter Tod in Kleinskindesalter und elektromagnetische Felder. Med Klin 1976; 71: 1500–5

Wilson B.W. , Stevens R.G. Extremely low frequency EM fields: the question of cancer. Ohio: Battelle Press, 1990

Perry F.S. , Reichmanis M. Environmental power frequency magnetic fields and suicide. Health Phys 1981; 41: 267–77

Dowson D. , Lewith G.T. Overhead high voltage cables and recurrent headache and depressions. Practitioner 1988; 232: 435–6

Gardner M.J. , Snee M.P. Results of case-control study of leukaemia and lymphoma among young people near Sellafield nuclear plant in W. Cumbria. BMJ 1990; 300: 423–34

Coghill R.W. The electric railway children: an electromagnetic aetiology for cot death? Hosp Equipment Supplies June 1989: 9

U.S. Congress Office of Technology Assessment. Biological effects of power frequency electric and magnetic fields. Background paper OTA BP-E-53, Washington DC, May 1989

Modan B. Exposure to electromagnetic fields and brain malignancy: a newly discovered menace? Am J Ind Med 1988; 13: 625–7