van Zyl, A. G. P., Allwood, B. W., Koegelenberg, C. F. N., Lalla, U., & Retief, F. (2023). The effect of inhaled nitric oxide on shunt fraction in mechanically ventilated patients with COVID‑19 pneumonia. African Journal of Thoracic and Critical Care Medicine, 29(2), 64-66. https://doi.org/10.7196/AJTCCM.2023.v29i2.279