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Ultrasound assessment of cervical length in threatened preterm labor.
Tsoi E, Akmal S, Rane S, Otigbah C, Nicolaides KH.
Ultrasound Obstet Gynecol 2003;21:552-5. -
Transvaginal ultrasound in pregnancy: its acceptability to women and maternal psychological morbidity.
Clement S, Candy B, Heath V, To M, Nicolaides KH.
Ultrasound Obstet Gynecol 2003;22:508-14.