P11 How do perinatal risk factors mediate the relationship between maternal socioeconomic status and preterm birth? Analysis of routine healthcare data from the North West region of England
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2009 ◽
Vol 21
(4)
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pp. 315-328
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2011 ◽
Vol 204
(1)
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pp. S181-S182
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2001 ◽
Vol 99
(2)
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pp. 207-212
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2008 ◽
Vol 12
(6)
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pp. 455-460
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