(Q51712797)
Statements
Does non-responder bias have a significant effect on the results in a postal questionnaire study? (English)
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Kotaniemi JT
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Hassi J
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Kataja M
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Jönsson E
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Laitinen LA
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Sovijärvi AR
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Lundbäck B
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1 January 2001
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17
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9
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809-817
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