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- birth: issues in perinatal care777
- bjog: an international journal of obstetrics & gynaecology420
- australian & new zealand journal of obstetrics & gynaecology415
- international journal of gynecology & obstetrics413
- journal of obstetrics & gynaecology research312
- acta obstetricia et gynecologica scandinavica223
- obstetrician & gynaecologist200
- tropical medicine & international health160
- paediatric & perinatal epidemiology144