الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1d048b0683fd27927ec9b0432ae9cd4cTesthttp://europepmc.org/articles/PMC8017323Test
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3e80ad7c1b618bd1869451b20755637dTesthttp://europepmc.org/articles/PMC6484938Test