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International Journal of Gynecology & Obstetrics > 2016 > 134 > 2 > 173-176
Journal of Midwifery and Women's Health > 2008 > 53 > 5 > e41-e47
International Journal of Gynecology & Obstetrics > 2016 > 134 > 2 > 173-176
Journal of Midwifery and Women's Health > 2008 > 53 > 5 > e41-e47