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Heck JE, Chen Y, Grann VR, Slavkovich V, Parvez F, Ahsan H.Heck JE, et al.J Occup Environ Med. 2008 Jan;50(1):80-7. doi: 10.1097/JOM.0b013e31815ae9d4.J Occup Environ Med. 2008.PMID: 18188085
Heck JE, Marcotte EL, Argos M, Parvez F, Ahmed A, Islam T, Sarwar G, Hasan R, Ahsan H, Chen Y.Heck JE, et al.Int J Epidemiol. 2012 Apr;41(2):462-71. doi: 10.1093/ije/dyr191. Epub 2011 Dec 25.Int J Epidemiol. 2012.PMID: 22253307Free PMC article.
Heck JE, Albert SM, Franco R, Gorin SS.Heck JE, et al.J Am Geriatr Soc. 2008 Sep;56(9):1687-92. doi: 10.1111/j.1532-5415.2008.01848.x. Epub 2008 Aug 4.J Am Geriatr Soc. 2008.PMID: 18691280
Heck JE, Sell RL, Gorin SS.Heck JE, et al.Am J Public Health. 2006 Jun;96(6):1111-8. doi: 10.2105/AJPH.2005.062661. Epub 2006 May 2.Am J Public Health. 2006.PMID: 16670230Free PMC article.