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BJOG: An International Journal of Obstetrics & Gynaecology > 131 > 3 > 334 - 342
Acta Obstetricia et Gynecologica Scandinavica > 102 > 12 > 1711 - 1718
BJOG: An International Journal of Obstetrics & Gynaecology > 131 > 3 > 334 - 342
Acta Obstetricia et Gynecologica Scandinavica > 102 > 12 > 1711 - 1718