@article{Pierce2020,
author = {Pierce, M. and Hope, H. and Ford, T.},
title= {Mental health before and during the COVID-19 pandemic: A longitudinal probability sample survey of the UK population},
year = {2020},
doi = {10.1016/S2215-0366(20)30308-4},
volume = {7},
number = {10},
pages = {883--892},
}