超声四腔心头侧偏转法及顺序节段分析法诊断中孕期胎儿先天性心脏病的临床价值
초성사강심두측편전법급순서절단분석법진단중잉기태인선천성심장병적림상개치
Clinical value of four-chamber view cephalic deviation method and sequential segmental analysis method in the diagnosis of fetal congenital heart disease in middle pregnancy
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