By Chervenak F.A.   McCullough L.B.   in European Journal of Obstetrics and Gynecology and Reproductive Biology

ISSN:0301-2115|75|1|91-94

Elsevier‎(1997)‎

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By Skupski D.   Chervenak F.   in The Ultrasound Review of Obstetrics & Gynecology

ISSN:1472-2240|1|1|28-37

Informa Healthcare‎(2001)‎

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By Chervenak F.   McCullough L.   in The Ultrasound Review of Obstetrics & Gynecology

ISSN:1472-2240|1|2|107-110

Informa Healthcare‎(2001)‎

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By Chervenak F. A.   McCullough L. B.   Levene M. I.   in Journal of Obstetrics & Gynaecology

ISSN:1364-6893|27|1|3-7

Informa Healthcare‎(2007)‎

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