(Q44070869)
Statements
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The validity of drug use self-reports among hard core drug users in a household survey in Puerto Rico: comparison of survey responses of cocaine and heroin use with hair tests (English)
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Héctor M Colón
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Rafaela R Robles
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Hardeo Sahai
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1 August 2002
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67
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3
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269-279
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Identifiers
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