颈项透明层增厚及三尖瓣反流在胎儿早期心脏畸形筛查中的价值
경항투명층증후급삼첨판반류재태인조기심장기형사사중적개치
The value of fetal nuchal translucensy thickness and tricuspid regurgitation in screening for congenital cardiac defects in the third trimester
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