Den Daas, C., Hubbard, G., Johnston, M., Dixon, D., & The CHARIS Consortium. (2021). Protocol of the COVID-19 Health and Adherence Research in Scotland (CHARIS) study: understanding changes in adherence to transmission-reducing behaviours, mental and general health, in repeated cross-sectional representative survey of the Scottish population. BMJ Open, 11(2), Article e044135. https://doi.org/10.1136/bmjopen-2020-044135