الإتاحة: https://doi.org/10.1111/all.14549Testhttp://hdl.handle.net/2318/1770834Test
الوصول الحر: https://orbi.uliege.be/handle/2268/253923Test
الإتاحة: https://doi.org/10.1186/s13601-020-00362-7Testhttp://hdl.handle.net/10447/550178Test
الإتاحة: https://doi.org/10.1111/all.14549Testhttps://hdl.handle.net/11386/4860933Test
الإتاحة: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7436771/pdf/ALL-9999-na.pdfTest
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7edb7292be558d9b593ed23c2b151382Testhttps://hal.science/hal-03049180Test