Impulsivity Mediates Associations Between Problematic Internet Use, Anxiety, and Depressive Symptoms in Students: A Cross-Sectional COVID-19 Study. - Gecaite-Stonciene J; Saudargiene A; Pranckeviciene A; Liaugaudaite V; Griskova-Bulanova I; Simkute D; Naginiene R; Dainauskas LL; Ceidaite G; Burkauskas J (Frontiers in psychiatry, 2021)