الوصول الحر: https://doaj.org/article/0a2238e6e69947ba9113af2e76fa12bbTest
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7af2bb72428e1b37d5f4bb399f480bb9Testhttps://pubmed.ncbi.nlm.nih.gov/31201358Test