Twinge benefits.
Crouch
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D000339:Affect; D017677:Age Distribution; D001416:Back Pain / Q000453:epidemiology / Q000209:etiology* / Q000517:prevention & control*; D006801:Humans; D008019:Life Style; D017770:Lifting / Q000009:adverse effects; D009726:Nurses; D009784:Occupational Diseases / Q000453:epidemiology / Q000209:etiology* / Q000517:prevention & control*; D016272:Occupational Health; D012307:Risk Factors; D012648:Self Care / Q000379:methods