No abstract available
MeSH terms
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Adult
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Cervical Length Measurement / methods*
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Cervix Uteri / diagnostic imaging*
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Cross-Sectional Studies
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Female
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Humans
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Pregnancy
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Pregnancy Complications / diagnostic imaging*
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Pregnancy Trimester, Second
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Premature Birth / prevention & control
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Prenatal Diagnosis
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Reproducibility of Results
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Uterine Cervical Diseases / diagnostic imaging*