الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::af4f417c5f1c56ae7a79131fc2986ffcTesthttps://doi.org/10.1186/s12882-016-0398-0Test
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::932f76d8346deda82213ab39885ee1b4Testhttps://pubmed.ncbi.nlm.nih.gov/28116772Test