BAKHTAWAR , K. .; JOHN, A. . .; ALI , A. .; MUBBARKA , M. . Ultrasound Diagnosis and Risk Factors of 1st Trimester Complications in Pregnancy: Ultrasound Diagnosis and Risk Factors of 1st Trimester. Pakistan BioMedical Journal, [S. l.], v. 5, n. 4, p. 41–45, 2022. DOI: 10.54393/pbmj.v5i4.293. Disponível em: https://www.pakistanbmj.com/journal/index.php/pbmj/article/view/293. Acesso em: 23 feb. 2024.