Davis S et al.
Effects of 60-Hz magnetic field exposure on nocturnal 6-sulfatoxymelatonin, estrogens, luteinizing hormone, and follicle-stimulating hormone in healthy reproductive-age women: results of a crossover trial.
Warman GR et al.
Acute exposure to circularly polarized 50-Hz magnetic fields of 200-300 microT does not affect the pattern of melatonin secretion in young men.
Levallois P et al.
Effects of electric and magnetic fields from high-power lines on female urinary excretion of 6-sulfatoxymelatonin.