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Burgard SA, Kalousova L, Seefeldt KS.Burgard SA, et al.J Occup Environ Med. 2012 Sep;54(9):1101-6. doi: 10.1097/JOM.0b013e3182677dad.J Occup Environ Med. 2012.PMID: 22929796
Burgard SA, Brand JE, House JS.Burgard SA, et al.J Health Soc Behav. 2007 Dec;48(4):369-84. doi: 10.1177/002214650704800403.J Health Soc Behav. 2007.PMID: 18198685
Burgard SA, Ailshire JA.Burgard SA, et al.J Health Soc Behav. 2009 Dec;50(4):476-92. doi: 10.1177/002214650905000407.J Health Soc Behav. 2009.PMID: 20099452Free PMC article.