Liu Jing, Song Guang, Ren Weidong
Department of Obstetrics, First Affiliated Hospital of China Medical University, Shenyang, China.
Department of Ultrasound, Shengjing Hospital of China Medical University, Shenyang, China.
Echocardiography. 2017 Apr;34(4):629. doi: 10.1111/echo.13454.