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Ultrasound in Obstetrics & Gynecology > 61 > 3 > 399 - 407
Ultrasound in Obstetrics & Gynecology > 60 > 3 > 381 - 389
Ultrasound in Obstetrics & Gynecology > 61 > 3 > 399 - 407
Ultrasound in Obstetrics & Gynecology > 60 > 3 > 381 - 389