الوصول الحر: https://explore.openaire.eu/search/publication?articleId=pmid________::fb794d409ca18099f5bc31ea0a9ae635Testhttp://europepmc.org/articles/PMC5364789Test
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=pmid________::44d309ecf7458c067435d361e1300e1fTesthttp://europepmc.org/articles/PMC6340617Test
الإتاحة: https://doi.org/10.2459/JCM.0b013e3283347d65Testhttps://orbi.uliege.be/handle/2268/151030Test
الإتاحة: https://orbi.uliege.be/handle/2268/151554Test
الإتاحة: https://doi.org/10.2143/AC.63.3.1020301Testhttps://orbi.uliege.be/handle/2268/151125Test
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::51bd07e9fe3df4facb22a569150412a1Testhttps://doi.org/10.2459/jcm.0b013e328354a803Test
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=od______1131::bc0866ff9ed0e31ebe065002a2497852Testhttp://booksonline.iospress.nl/Extern/EnterMedLine.aspx?ISSN=0926-9630&Volume=150&SPage=590Test