By Flo K.   Wilsgaard T.   Acharya G.   in Ultrasound in Obstetrics and Gynecology

ISSN:1469-0705|37|5|538-542

John Wiley & Sons Inc‎(2011)‎

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By Hauge K.   Flo K.   Riedhart M.   Granberg S.   in European Journal of Obstetrics and Gynecology and Reproductive Biology

ISSN:0301-2115|92|1|167-170

Elsevier‎(2000)‎

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