OP21.06: Tricuspid annular plane systolic excursion in evaluation of right heart systolic function of fetuses in second and late trimester with conventional M‐mode and free angle M‐mode echocardiography. (1st October 2015) - Zhao, B.W.; Guo, X.; Qiu, J.; Wang, B.; Peng, X.; Pan, M.; Chen, R.