الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d84c72b991409d2a4438dbe114a3a27cTesthttp://hdl.handle.net/10044/1/39662Test
الإتاحة: https://doi.org/10.1093/eurheartj/eht517Testhttps://orbi.uliege.be/handle/2268/174191Test
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::14e09dc3b4710a4a853238e272b8136eTesthttps://europepmc.org/articles/PMC3112015Test/