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Archives of Gynecology and Obstetrics > 2019 > 299 > 5 > 1261-1273
BMC Pregnancy and Childbirth > 2017 > 17 > 1 > 1-7
Maternal and Child Health Journal > 1999 > 3 > 2 > 93-97
Archives of Gynecology and Obstetrics > 2019 > 299 > 5 > 1261-1273
BMC Pregnancy and Childbirth > 2017 > 17 > 1 > 1-7
Maternal and Child Health Journal > 1999 > 3 > 2 > 93-97