الوصول الحر: https://doaj.org/article/9751dbc1fa734c0ebd72bb9ee0362936Test
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dcece3babe2a404951bc62970e939b9fTesthttps://doi.org/10.1136/annrheumdis-2018-214971Test