الوصول الحر: https://doaj.org/article/2aa7eb9965a0448c98dcb1d8a7eb6751Test
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2515c1e8c006be893b6d353178c6ef94Testhttps://doi.org/10.1186/s13256-020-02401-0Test
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::26400756998df32727fc18cf0b18d300Testhttp://europepmc.org/articles/PMC6749904Test
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9673c3683a34f11f24d01e7c3d0136f0Testhttps://pubmed.ncbi.nlm.nih.gov/29318330Test