Doncheva – Dilova, Jaklin, Nikolay Stoilov, Tanja Kuneva, and Vladimira Boyadzhieva. 2024. “COVID-19 and Post-COVID-19 Syndrome As an Occupational Disease”. Rheumatology (Bulgaria) 31 (4): 60-77. https://doi.org/10.35465/31.4.2023.pp60-77.