Research Review: The impact of the COVID-19 pandemic on the mental health of children and young people with pre-existing mental health and neurodevelopmental conditions - a systematic review and meta-analysis of longitudinal studies. - Ching BCF; Downs J; Zhang S; Abdul Cader H; Penhallow J; Voraite E; Popnikolova T; Wickersham A; Parlatini V; Simonoff E (Journal of child psychology and psychiatry, and allied disciplines, 2025)