الوصول الحر: https://explore.openaire.eu/search/publication?articleId=pmid________::30c8a25eb4e43792debfbdb1d0516559Testhttps://pubmed.ncbi.nlm.nih.gov/2901245Test
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=pmid________::f7a2688a9030db07aa887ed4185cd548Testhttps://pubmed.ncbi.nlm.nih.gov/3605978Test