(Q46450474)
Statements
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The epidemiology of threatened preterm labor: a prospective cohort study (English)
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David A Savitz
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Melissa L McPheeters
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Katherine E Hartmann
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Jay S Kaufman
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William C Miller
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Joanne M Garrett
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John M Thorp
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1 April 2005
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192
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4
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1325-9; discussion 1329-30
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