Labuschagne, H C, J Venturas, and H Moodley. “Risk Stratification of Hospital Admissions for COVID-19 Pneumonia by Chest Radiographic Scoring in a Johannesburg Tertiary Hospital”. South African Medical Journal 113, no. 2 (February 1, 2023): 75–83. Accessed June 2, 2026. https://www.samajournals.co.za/index.php/samj/article/view/733.