“Uterine Balloon Volume Shifts Using a Free-Flow Uterine Balloon in the Management of Refractory Postpartum Haemorrhage”. South African Journal of Obstetrics and Gynaecology 30, no. 1 (April 29, 2024): e1525. Accessed April 20, 2026. https://www.samajournals.co.za/index.php/sajog/article/view/1525.