Bakhtawar , K. ., John, A. . ., Ali , A. . and Mubbarka , M. . (2022) “Ultrasound Diagnosis and Risk Factors of 1st Trimester Complications in Pregnancy: Ultrasound Diagnosis and Risk Factors of 1st Trimester”, Pakistan BioMedical Journal, 5(4), pp. 41–45. doi: 10.54393/pbmj.v5i4.293.