الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ef567001a0c7933e204a54c4c732036fTesthttps://doi.org/10.1136/ard.2010.148072Test
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5d0b935f1c1635ddb3ed15c4b8361db1Testhttps://doi.org/10.1136/ard.2010.140111Test