Cagan, M.; Kayikci, U.; Fadiloglu, E.; Bayrak, A. C.; Kir, E. A.; Aykan, H. H.; Deren, O. Longitudinal Assessment of Fetal Ductus Arteriosus Morphometry: Establishing Gestational Age-Specific Reference Values. Gynecol Obstet Reprod Med 2026, 32, 70-76.