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الإتاحة: https://doi.org/10.1007/s00467-010-1634-7Test
الإتاحة: https://doi.org/10.1093/ndt/gfp436Testhttp://ndt.oxfordjournals.org/cgi/content/short/gfp436v2Test
الإتاحة: https://doi.org/10.1159/000341627Testhttps://www.karger.com/Article/Pdf/341627Test
الإتاحة: https://doi.org/10.1016/j.jelectrocard.2008.09.007Testhttps://api.elsevier.com/content/article/PII:S0022073608003658?httpAccept=text/xmlTesthttps://api.elsevier.com/content/article/PII:S0022073608003658?httpAccept=text/plainTest
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