Matimba, J, et al. “Association Between D-Dimers and in-Hospital All-Cause Mortality in COVID-19 Patients at a Tertiary Hospital in South Africa: A Retrospective Study”. African Journal of Thoracic and Critical Care Medicine, vol. 31, no. 4, Dec. 2025, p. e3320, https://doi.org/10.7196/AJTCCM.2025.v31i4.3320.