Analysis of health records of day and shift furnace maintenance workers.
D000328:Adult; D002940:Circadian Rhythm; D006801:Humans; D007348:Insurance, Health; D008297:Male; D008499:Medical Records; D008669:Metallurgy; D008875:Middle Aged; D009784:Occupational Diseases / Q000209:etiology*; D014937:Work; D014940:Work Schedule Tolerance