الإتاحة: https://doi.org/10.3390/ijerph19031101Test
الإتاحة: https://doi.org/10.3390/ijerph17134704Test
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c9fffd7b9fcda8ef58f41ea04a985f21Testhttps://doi.org/10.1093/heapol/czaa074Test
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e4500b7ed9800e1181d96e770fa160feTesthttps://www.mdpi.com/1660-4601/18/6/3111Test
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::92551fcefb0852e4a6bbf78ba368ce5eTest