Hall, Charlotte L, Marston, Louise, Khan, Kareem, Brown, Beverley J, Sanderson, Charlotte, Andrén, Per, Bennett, Sophie, Heyman, Isobel, Mataix-Cols, David, Serlachius, Eva, Hollis, Chris, Murphy, Tara, "The COVID-19 pandemic and its impact on tic symptoms in children and young people: a prospective cohort study", Child Psychiatry and Human Development, 2025