Article 1 Blended education COVID-19 1 Distance learning 1 Impact 1 Likert scale 1 Medical students 1 Saudi Arabia 1 academic achievement 1 adult 1 controlled study 1 coronavirus disease 2019 1 cross-sectional study 1 descriptive research 1 distance learning 1 e-learning 1 female 1 health hazard 1 human 1 interpersonal communication 1 knowledge 1 learning environment 1 lockdown 1 major clinical study 1 male 1 medical student 1 normal human 1 pandemic 1 perception 1 program efficacy 1