(Q43258883)
Statements
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Self-selection and bias in a large prospective pregnancy cohort in Norway (English)
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Håkon K Gjessing
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Per Magnus
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Stein Emil Vollset
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Rolv Skjaerven
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Kari K Melve
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Roy M Nilsen
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Patricia Schreuder
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Elin R Alsaker
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Kjell Haug
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Anne Kjersti Daltveit
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1 November 2009
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23
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6
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597-608
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Identifiers
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