الوصول الحر: https://doaj.org/article/20304e90eded43f5addbbb288ee210d7Test
الوصول الحر: https://doaj.org/article/56fdc0a7d7ca4a4585dead93cfbf9ff0Test
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_________::03bf8510b00bc4444885fdc06cee5ed2Testhttps://doi.org/10.1055/s-0030-1267804Test
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::55b4c51adf694490d7ad156b55c233e4Testhttps://pubmed.ncbi.nlm.nih.gov/11930058Test