الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::11d8073a44834dcfa38393733c519cf7Testhttp://europepmc.org/articles/PMC7694358Test
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6699e1ab52ad1cbaccca5bd85f77ca2aTest