Irsa Shuaib, Naheed Khan, Mehmood Akhtar Khattak, Kanwal Rehana, Hina Gul, Kalsoom Nawab (2022) “Single Umbilical Artery Detected on First-Trimester Ultrasound”, Pakistan Journal of Medical & Health Sciences, 16(07), p. 988. doi: 10.53350/pjmhs22167988.