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- american journal of obstetrics and gynecology351
- plos one64
- obstetrics & gynecology54
- international journal of gynecology & obstetrics50
- the journal of maternal-fetalneonatal medicine : the official journal of the european association of perinatal medicine, the federation of asia and oceania perinatal societies, the international society of perinatal obstetricians42
- the journal of maternal-fetal & neonatal medicine35
- acta obstetricia et gynecologica scandinavica32
- american journal of perinatology32
- clinical obstetrics and gynecology31