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Bekker JL, Hoffman LC, Jooste PJ.Bekker JL, et al.Int J Environ Health Res. 2011 Oct;21(5):341-63. doi: 10.1080/09603123.2011.552715. Epub 2011 May 23.Int J Environ Health Res. 2011.PMID: 21574086
van der Merwe M, Bekker JL, van der Merwe P, Michel AL.van der Merwe M, et al. Among authors: bekker jl.J S Afr Vet Assoc. 2009 Sep;80(3):142-5. doi: 10.4102/jsava.v80i3.189.J S Afr Vet Assoc. 2009.PMID: 20169745
Harmse JL, Engelbrecht JC, Bekker JL.Harmse JL, et al. Among authors: bekker jl.Int J Environ Res Public Health. 2016 Feb 6;13(2):197. doi: 10.3390/ijerph13020197.Int J Environ Res Public Health. 2016.PMID: 26861374Free PMC article.Review.