Determinants of psychological distress during the COVID-19 pandemic and the lockdown measures: A nationwide on-line survey in Greece and Cyprus - Galanis, Petros; Andreadaki, Evangelia; Kleanthous, Efrosyni; Georgiadou, Anastasia; Evangelou, Efi; Kallergis, Georgios; Kaitelidou, Daphne (medRxiv, 2020)