B. Gulshad, H. Begum, A. Ali, A. Riaz, and A. Haleema, “Maternal And Obstetric Factors Associated With Preterm Birth In Pregnancies Complicated By Placenta Previa: A Single-Center Study”, Adolescência e Saúde, vol. 20, no. 2s, pp. 12–18, Sep. 2025.