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Journal
- placenta25
- american journal of obstetrics and gynecology15
- ultrasound in obstetrics gynecology the official journal of the international society of ultrasound in obstetrics and gynecology10
- european journal of obstetrics gynecology and reproductive biology9
- journal of obstetrics and gynaecology research9
- journal of perinatal medicine9
- american journal of perinatology7
- journal of maternal fetal neonatal medicine the official journal of the european association of perinatal medicine the federation of asia and oceania perinatal societies the international society of perinatal obstetricians6
- obstetrics and gynecology6