Which children and young people are at higher risk of severe disease and death after hospitalisation with SARS-CoV-2 infection in children and young people: A systematic review and... oleh Rachel Harwood, Helen Yan, Nishanthi Talawila Da Camara, Clare Smith, Joseph Ward, Catrin Tudur-Smith, Michael Linney, Matthew Clark, Elizabeth Whittaker, Defne Saatci, Peter J. Davis, Karen Luyt, Elizabeth S. Draper, Simon E Kenny, Lorna K. Fraser, Russell M. Viner