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BMC Medical Research Methodology

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Stern RK
Hagan H
Lelutiu-Weinberger C
Des Jarlais D
Scheinmann R
Strauss S
Pouget ER
Flom P

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Stern RK
Hagan H
Lelutiu-Weinberger C
Des Jarlais D
Scheinmann R
Strauss S
Pouget ER
Flom P
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