title: Preliminary results of a preemployment back x-ray program for state traffic officers.
mesh_terms: D001291:Attitude of Health Personnel; D001334:Automobile Driving; D001415:Back / Q000000981:diagnostic imaging*; D019567:Back Injuries; D002140:California; D003365:Costs and Cost Analysis; D005069:Evaluation Studies as Topic; D006801:Humans; D008297:Male; D009784:Occupational Diseases / Q000517:prevention & control; D009786:Occupational Health Services; D009787:Occupational Medicine; D011859:Radiography; D012926:Social Control, Formal; D013168:Spondylolisthesis / Q000000981:diagnostic imaging; D014947:Wounds and Injuries / Q000517:prevention & control