الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3200f4144c47e8a7ea6b4ce607c7863bTesthttp://europepmc.org/articles/PMC7290884Test
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::82ad85d7341d9caba3c9eb75ba12a941Testhttp://europepmc.org/articles/PMC5973225Test