Boyadzhieva, V., Stoilov, N., Ivanova, M. and Stoilov, R. (2020) “INTERSTITIAL PNEUMONIA WITH AUTOIMMUNE FEATURES – WHAT DO WE KNOW?”, Rheumatology (Bulgaria), 28(1), pp. 41-52. doi: 10.35465/28.1.2020.pp41-52.