(Q45307176)
Statements
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Maternal serum free beta hCG screening: results of studies including 480 cases of Down syndrome (English)
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Macri JN
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Spencer K
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Garver K
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Buchanan PD
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Say B
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Carpenter NJ
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Muller F
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Boué A
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1 February 1994
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14
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2
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97-103
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Identifiers
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