By Nunns D.   Harkett R.   Oppenheimer C. A.   in Journal of Obstetrics & Gynaecology

ISSN:1364-6893|18|4|395-396

Informa Healthcare‎(1998)‎

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By Nunns D.   Hawthorne B.   Goulding P.   Maresh M.   in European Journal of Obstetrics and Gynecology and Reproductive Biology

ISSN:0301-2115|62|1|141-143

Elsevier‎(1995)‎

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