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Ultrasound in Obstetrics & Gynecology > 36 > 2 > 154 - 158
European Journal of Radiology > 2006 > 57 > 2 > 226-232
Ultrasound in Obstetrics & Gynecology > 36 > 2 > 154 - 158
European Journal of Radiology > 2006 > 57 > 2 > 226-232