Suicidal thoughts and behaviour among healthcare workers in England during the COVID-19 pandemic: A longitudinal study. - Padmanathan P; Lamb D; Scott H; Stevelink S; Greenberg N; Hotopf M; Morriss R; Raine R; Rafferty AM; Madan I; Dorrington S; Wessely S; et al. (PloS one, 2023)