Color Doppler ultrasound and magnetic resonance imaging in prenatal diagnosis of pernicious placenta previa and pernicious placenta previa with placenta accreta: clinic value and analysis of missed diagnosis
SUN Tiantian, YE Baoying, YANG Yu, NIU Jianmei
Journal of Diagnostics Concepts & Practice . 2021, (02): 173 -177 .  DOI: 10.16150/j.1671-2870.2021.02.010