The Lancet. Infectious diseases Paediatric Emergency Research in the UK and Ireland (PERUKI) Group 2021, ' Validating clinical practice guidelines for the management of children with non-blanching rashes in the UK (PiC) a prospective, multicentre cohort study ', The Lancet Infectious Diseases, vol. 21, no. 4, pp. 569-577 . https://doi.org/10.1016/S1473-3099(20)30474-6