The role of pulmonary valve pressure gradient in the evaluation of pulmonary artery systolic pressure in patients with atrial septal defect

GUAN Xin, DU Xin, WAN Zheng, YANG Zhen-wen, YANG Meng-yun, WU Tian-feng

Tianjin Medical Journal . 2018, (7): 715 -719 . DOI: 10.11958/20180321