By Twomey D.   in Antonie van Leeuwenhoek

ISSN:0003-6072|82|1-4|165-185

Springer Publishing Company ‎(2002)‎

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By Okonta P. I.   Okali U. K.   Otoide V. O.   Twomey D.   in Journal of Obstetrics & Gynaecology

ISSN:1364-6893|22|6|626-629

Informa Healthcare‎(2002)‎

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By Sunday-Adeoye IM   Okonta P   Twomey D   in Journal of Obstetrics & Gynaecology

ISSN:1364-6893|24|5|525-529

Informa Healthcare‎(2004)‎

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