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Pak R, Price MM, Thatcher J.Pak R, et al.J Med Internet Res. 2009 Nov 16;11(4):e45. doi: 10.2196/jmir.1220.J Med Internet Res. 2009.PMID: 19917549Free PMC article.
Price MM, Crumley-Branyon JJ, Leidheiser WR, Pak R.Price MM, et al. Among authors: pak r.JMIR Hum Factors. 2016 Jun 1;3(1):e16. doi: 10.2196/humanfactors.5106.JMIR Hum Factors. 2016.PMID: 27251110Free PMC article.
de Visser EJ, Pak R, Shaw TH.de Visser EJ, et al. Among authors: pak r.Ergonomics. 2018 Oct;61(10):1409-1427. doi: 10.1080/00140139.2018.1457725. Epub 2018 Apr 9.Ergonomics. 2018.PMID: 29578376