الوصول الحر: https://doaj.org/article/cbf0a92bb5874c11a69dc96e5efce1afTest
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0550abb1901911bc2d06d1f118adbb66Testhttp://europepmc.org/articles/PMC4409287Test
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dfb7f9c87aab37682146dec8f6b0e6afTesthttps://pubmed.ncbi.nlm.nih.gov/27671775Test