AIMS: To investigate @entity5 incidence in workers exposed to high levels of extremely low frequency magnetic fields (ELF-MF). METHODS: A cohort based on the engineering industry was established. Industries assumed to use resistance welding in production were chosen in order to increase the prevalence of high exposed subjects and to reduce the influence of confounding factors. All @entity1 and @entity1 employed in these branches during 1985-94 were selected, 537 692 @entity1 and 180 529 @entity1 . Occupation, based on census information from 1980, 1985, and 1990, was linked to a job exposure matrix on ELF-MF. Four exposure groups were used by stratifying on mean workday ELF-MF exposure, using the lowest exposure group as reference. @entity5 incidence was obtained by linkage to the Swedish @entity5 Registry. RESULTS: @entity1 in the very high exposure group showed an increased incidence of @entity5 of the kidney, pituitary gland, and biliary passages and liver; for these @entity5 sites an exposure-response relation was indicated. @entity1 in the very high exposure group showed an increased incidence of @entity816 I-IV, with a clear exposure-response pattern. An association was suggested in the high exposure group only, for @entity5 and @entity1582 . Decreased risks in the very high exposure group among @entity1 were found for @entity694 and connective tissue/muscle. CONCLUSIONS: The results on @entity96 , kidney, and pituitary gland among @entity1 are in accordance with previous observations. Regarding @entity1313 and @entity1778 , the outcome for @entity1 provided further support of an association. The hypothesis of a biological mechanism involving the endocrine system was partly supported.

XXXX incidence and magnetic field exposure in industries using resistance welding in Sweden.

@entity1 :: ('9606', 'Species') :: ['women', 'Women', 'Men', 'men'] @entity96 :: ('MESH:D008113', 'Disease') :: ['cancer of the liver'] @entity5 :: ('MESH:D009369', 'Disease') :: ['cancer of the corpus uteri', 'cancer', 'tumours', 'Cancer'] @entity1313 :: ('MESH:D001932', 'Disease') :: ['brain tumours'] @entity1582 :: ('MESH:D009101', 'Disease') :: ['multiple myeloma'] @entity1778 :: ('MESH:D007938', 'Disease') :: ['leukaemia'] @entity816 :: ('MESH:D001254', 'Disease') :: ['astrocytoma'] @entity694 :: ('MESH:D003110', 'Disease') :: ['cancer of the colon']
@entity5 :: (MESH:D009369,Disease) :: ['Cancer']
