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Smith DL, Fehling PC, Hultquist EM, Lefferts WK, Barr DA, Storer TW, Cooper CB.Smith DL, et al. Among authors: lefferts wk.Ergonomics. 2012;55(10):1243-51. doi: 10.1080/00140139.2012.703696. Epub 2012 Aug 1.Ergonomics. 2012.PMID: 22849757