Burnett, H., Olsen, J., Nicholls, N. & Mitchell, R. 2021, 'Change in time spent visiting and experiences of green space following restrictions on movement during the COVID-19 pandemic: A nationally representative cross-sectional study of UK adults', BMJ Open, 11(3), article no: e044067. https://doi.org/10.1136/bmjopen-2020-044067