Sickness absence due to back lesions in coal miners.
D000041:Absenteeism; D000293:Adolescent; D000328:Adult; D000368:Aged; D001416:Back Pain / Q000453:epidemiology*; D003032:Coal Mining; D004739:England; D006801:Humans; D008297:Male; D008875:Middle Aged; D009784:Occupational Diseases / Q000453:epidemiology*