Radiological Society of North America Chest CT Classification System for Reporting COVID-19 Pneumonia: Interobserver Variability and Correlation with Reverse-Transcription Polymerase Chain Reaction - de Jaegere, T MH; Krdzalic, J; Fasen, B ACM; Kwee, R M; COVID-19 CT Investigators South-East Netherlands (CISEN) study group (Radiol Cardiothorac Imaging, 2020)