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Acta Obstetricia et Gynecologica Scandinavica > 98 > 3 > 374 - 381
BMC Pregnancy and Childbirth > 2017 > 17 > 1 > 1-8
Archives of Gynecology and Obstetrics > 2014 > 289 > 4 > 781-785
Der Gynäkologe > 2006 > 39 > 8 > 648-655
Acta Obstetricia et Gynecologica Scandinavica > 98 > 3 > 374 - 381
BMC Pregnancy and Childbirth > 2017 > 17 > 1 > 1-8
Archives of Gynecology and Obstetrics > 2014 > 289 > 4 > 781-785
Der Gynäkologe > 2006 > 39 > 8 > 648-655