Hasegawa, T., Kuji, N., Isomura, T. . 　, Notake, F., Tsukamoto, T., Sasaki, T., … Nishi, H. (2018). Ultrasound elastography can detect placental tissue abnormalities. Radiology and Oncology, 52(2). Retrieved from https://radioloncol.com/index.php/ro/article/view/2955