No abstract available
MeSH terms
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Canada
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Diagnostic Tests, Routine*
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Evaluation Studies as Topic
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Female
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Fetal Diseases / diagnostic imaging
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Fetal Diseases / prevention & control*
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Humans
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Pregnancy
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Pregnancy Outcome
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Randomized Controlled Trials as Topic
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Technology Assessment, Biomedical*
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Ultrasonography, Prenatal / psychology
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Ultrasonography, Prenatal / statistics & numerical data*