(Q48418111)
Statements
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Effects of varying the monetary value of voucher-based incentives on abstinence achieved during and following treatment among cocaine-dependent outpatients. (English)
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Sarah H Heil
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Stephen T Higgins
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Robert Dantona
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Robert Donham
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Martha Matthews
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Gary J Badger
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1 February 2007
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102
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2
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271-281
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