الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ce22cbfb76b4eec5bcbf546e74cc8fc6Testhttp://europepmc.org/articles/PMC2860687Test
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::88a7e77e78a654c5553d4b6ccd9d7c34Testhttps://pubmed.ncbi.nlm.nih.gov/21750540Test