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Best Practice & Research Clinical Obstetrics & Gynaecology > 2002 > 16 > 3 > 411-448
American Journal of Obstetrics and Gynecology > 2001 > 185 > 2 Supplement > S47-S56
Best Practice & Research Clinical Obstetrics & Gynaecology > 2002 > 16 > 3 > 411-448
American Journal of Obstetrics and Gynecology > 2001 > 185 > 2 Supplement > S47-S56