经腹部超声与经阴道彩色多普勒超声用于早期宫外孕诊断的对比分析
경복부초성여경음도채색다보륵초성용우조기궁외잉진단적대비분석
The comparative analysis of trans-abdominal ultrasound and trans-vaginal color doppler ultrasound for early ectopic pregnancy diagnosis
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