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Factors influencing the estimation of the occluder size for closing secundum atrial septal defects by transthoracic echocardiography |
PAN Min, WANG Shuang-shuang, WU Chun, CHEN Yun, HE Xue-zhi, SUN Yan-rong |
Peking University Shenzhen Hospital, Shenzhen Guangdong 518036, China |
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