الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::68ef81b8d73c3b5dda8ff6bd0c69ea7eTesthttps://pubmed.ncbi.nlm.nih.gov/22279609Test
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e9272404b321aa3f12826c1329f98915Testhttps://europepmc.org/articles/PMC3173654Test/