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Subjects
- Pregnancy[remove]229
- Humans28
- United States27
- Pregnancy Complications21
- Midwifery18
- Infant Care14
- Genital Diseases, Female13
- Reproduction13
- Delivery, Obstetric11
- Family Planning Services11
- Female11
- Obstetric Surgical Procedures11
- Cardiovascular Diseases10
- Marriage10
- Smoking10
- Tobacco Use Disorder10
- Hygiene9
- Infant9
- Lung Diseases, Obstructive9
- Neoplasms9