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Saudi Arabia
Cuba
Argentina
Thailand
Pregnancy
Prenatal Care
Health Services Research
Obstetrical Vacuum Extraction
Pregnancy Outcomes
Multicenter Studies
Risk Factors
Developing Countries
Randomized Controlled Trials
Research Design
Premature Infant
Patient Selection
Second Labor Stage
Newborn Infant
Prospective Payment Assessment Commission
Circumcision, Female
Co-Publications
9
7
5
3
2
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