(Q39409510)
Statements
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Socioeconomic differences in smoking in an urban Swedish population. The bias introduced by non-participation in a mailed questionnaire (English)
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Boström G
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Hallqvist J
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Haglund BJ
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Romelsjö A
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Svanström L
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Diderichsen F
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1 June 1993
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21
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2
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77-82
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Identifiers
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