Some factors influencing the duration of morbidity in industry.
D000041:Absenteeism; D019567:Back Injuries; D006801:Humans; D008131:London; D008297:Male; D009784:Occupational Diseases; D011859:Radiography; D013124:Spinal Injuries / Q000209:etiology; D013131:Spine / Q000002:abnormalities / Q000000981:diagnostic imaging