الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7ca8d17d8a65ecd5fd078c358714459bTesthttps://doi.org/10.1016/s1474-4422Test(21)00331-8
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::070f1f6f1e025674e4ced58aa9218fbfTesthttp://hdl.handle.net/11570/3218654Test