Variation in Mental Health, Sleep Quality and Quality of Life Following COVID-19 Hospitalization. - Tsimitrea, Eleni; Chatzi, Maria; Saridi, Maria; Toska, Aikaterini; Gourgoulianis, Konstantinos I.; Papathanasiou, Ioanna V.; Boutlas, Stylianos; Fradelos, Evangelos C. (COVID, 2025)