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ajod-515	doi.org	https://doi.org/10.1519/00139143-200608000-00004
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ajod-515	doi.org	https://doi.org/10.1111/j.1530-0277.2007.00385.x
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ajod-515	doi.org	https://doi.org/10.1590/bjpt-rbf.2014.0096
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ajod-515	doi.org	https://doi.org/10.1016/j.apmr.2013.04.012
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ajod-515	doi.org	https://doi.org/10.1016/j.jcrc.2015.05.024
ajod-515	doi.org	https://doi.org/10.4081/bam.2010.4.145
ajod-515	doi.org	https://doi.org/10.1186/1471-2334-10-362
ajod-515	doi.org	https://doi.org/10.1097/qai.0000000000000299
ajod-515	doi.org	https://doi.org/10.5152/iao.2016.2242
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ajod-515	www.statssa.gov.za	http://www.statssa.gov.za/?page_id=1856&ppn=p0309.3&sch=6987
ajod-515	doi.org	https://doi.org/10.1093/ptj/82.2.128
ajod-515	doi.org	https://doi.org/10.1007/s11357-013-9517-z
ajod-515	doi.org	https://doi.org/10.1007/bf02195975
ajod-515	doi.org	https://doi.org/10.4102/sajp.v74i1.427
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ajod-515	doi.org	https://doi.org/10.1097/ccm.0000000000000030
ajod-515	www.who.int	www.who.int/mediacentrefactsheets/fs/04/en/