No abstract available
MeSH terms
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Adult
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Brain / abnormalities*
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Chorionic Gonadotropin / blood*
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Chorionic Gonadotropin / urine*
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Chorionic Gonadotropin, beta Subunit, Human
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Creatinine / urine
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Female
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Humans
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Japan
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Neural Tube Defects / diagnosis*
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Peptide Fragments / urine*
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Pregnancy
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Prenatal Diagnosis*
Substances
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Chorionic Gonadotropin
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Chorionic Gonadotropin, beta Subunit, Human
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Peptide Fragments
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Creatinine