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Journal
- bjog: an international journal of obstetrics & gynaecology382
- bmc pregnancy & childbirth264
- plos one242
- journal of obstetrics & gynaecology221
- journal of maternal-fetal & neonatal medicine200
- ultrasound in obstetrics & gynecology177
- archives of gynecology and obstetrics169
- acta obstetricia et gynecologica scandinavica153
- bmc pregnancy and childbirth109