K. E. Sprong, C. A. Wright, M. Mabenge, and S. Govender, “Placental histopathology, maternal characteristics and neonatal outcome in cases of preterm birth in a high-risk population in South Africa”, S Afr Med J, vol. 113, no. 4, Apr. 2023, doi: 10.7196/SAMJ.2023.v113i4.16772.