COVID-19 Clinical Features and Outcomes in Elderly Patients during Six Pandemic Waves. - Fericean, Roxana Manuela; Rosca, Ovidiu; Citu, Cosmin; Manolescu, Diana; Bloanca, Vlad; Toma, Ana-Olivia; Boeriu, Estera; Dumitru, Catalin; Ravulapalli, Madhavi; Barbos, Vlad; Oancea, Cristian (Journal of Clinical Medicine, 2022)