Jauniaux, E;    Collins, S;    Burton, GJ;      (2018)    The Placenta Accreta Spectrum: Pathophysiology and Evidence-based Anatomy for Prenatal Ultrasound Imaging.                   American Journal of Obstetrics and Gynecology , 218  (1)   pp. 75-87.    10.1016/j.ajog.2017.05.067 <https://doi.org/10.1016/j.ajog.2017.05.067>.       Green open access