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A comparative study between transabdominal ultrasound and transvaginal ultrasound in thediagnosis of fetal structural abnormalities at the 11~14 week of gestation |
PANG Hou-qing, YANG Tai-zhu, LUO Hong, YANG Fan |
Department of Radiology, the Huaxi Second Hospital of Sichuan University, Chengdu 610041, China) |
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