الوصول الحر: https://doaj.org/article/295f13c9ec3e4ec5b1205361915ceb6bTest
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c849f1e14f1434d6de3fa1bbf515ca7aTesthttps://doi.org/10.3109/0886022x.2014.949769Test
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4be345b058a43a47472d65fcd326a744Testhttps://pubmed.ncbi.nlm.nih.gov/27494109Test