Fig. 1From: A single-center, retrospective study of COVID-19 features in children: a descriptive investigationFlow chart for patient selection. Group A: 43 children with COVID-19 exposure history, positive CT, and positive PCR. Group B: seven children with COVID-19 exposure history, negative CT, and positive PCR. Group C: 26 children with COVID-19 exposure history, positive CT, and persistently negative PCR resultsBack to article page