mental health(2) COVID-19(2) conducted(1) COVID-19 pandemic(1) Anxiety(1) Psychological(1) cross-sectional survey(1) variable(1) Result(1) Risk factors(1) e-learning(1) learning(1) questionnaire(1) SAS(1) consequence(1) determinate(1) network analysis(1) Impact(1) lockdown(1) university students(1) student(1) Affect(1) was used(1) fatigue(1) pandemic(1) Mild(1) platform(1) limitation(1) extreme(1) vaccination(1)