الوصول الحر: https://doaj.org/article/eba9e3d47ebf4c45b3e11cbc99a5c3beTest
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0e0de16aae0085de5f9459cb5fca0ea7Testhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/24819633/pdf/?tool=EBITest