YU, Florrie NY, and Teresa WL MA. “Ultrasonographic Screening for Fetal Rib Number Anomalies”. Hong Kong Journal of Gynaecology, Obstetrics and Midwifery 20, no. 2 (April 6, 2023). Accessed May 5, 2024. https://hkjgom.org/home/article/view/284.