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Ultrasonographic diagnosis of placenta previa: comparison between transabdominal and transperinealultrasonography
Jin Wook Lee, Woo Mok Byun, Mi Soo Hwang, Jae Chun Chang, Bok Hwan Park, Kil Ho Cho, Tae Hyeung Lee
J Korean Soc Med Ultrasound. 1994;13(2):177-182.
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