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Obstetrics, Gynaecology & Reproductive Medicine > 2007 > 17 > 5 > 147-153
Women's Health Medicine > 2005 > 2 > 2 > 13-17
Current Obstetrics & Gynaecology > 2004 > 14 > 3 > 166-174
Best Practice & Research Clinical Obstetrics & Gynaecology > 1999 > 13 > 1 > 115-130