الوصول الحر: https://doaj.org/article/22091507465645d5b8ff5bcdbbb5a1ceTest
الوصول الحر: https://doaj.org/article/20a492f801944040a1ebedd4eb3f674dTest
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d50b9a8ce56c31a9a0fcf42296ab9c15Testhttps://doi.org/10.1007/s11239-020-02292-4Test
الإتاحة: https://doi.org/10.3389/fcvm.2022.993479.s001Testhttps://figshare.com/articles/dataset/Table_1_Electrocardiogram_abnormalities_and_prognosis_in_COVID-19_docx/21274524Test
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d9fd966633120f12ac34cfc8598d961dTesthttps://doi.org/10.1016/j.jss.2009.04.039Test
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::60be952cca2e077a9a28c848a37eb36fTesthttps://pubmed.ncbi.nlm.nih.gov/24569799Test