Don't back out of EMS!
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D019567:Back Injuries / Q000453:epidemiology / Q000503:physiopathology / Q000517:prevention & control*; D004634:Emergency Medical Technicians; D006801:Humans; D017770:Lifting / Q000009:adverse effects*; D016272:Occupational Health; D012307:Risk Factors; D014481:United States / Q000453:epidemiology