Livrinova, V., Petrov, I., Samardziski, I., Jovanovska, V., Simeonova-Krstevska, S., Todorovska, I., Atanasova-Boshku, A. and Gjorgjievska, M. (2018) “Obstetric Outcome in Pregnant Patients with Low Level of Pregnancy-Associated Plasma Protein A in First Trimester”, Open Access Macedonian Journal of Medical Sciences, 6(6), pp. 1028–1031. doi: 10.3889/oamjms.2018.238.