Behavioural precautions to avoid transmission of the COVID-19 virus – low educated groups are not always lagging behind - Aarø, Leif; Leino, Tony; Vedaa, Øystein; Knapstad, Marit; Skogen, Jens; Nilsen, Thomas; Svalebjørg, Mats; Klepp, Knut-Inge (Journal of Health Inequalities, 2023)