Incentives for retention of pregnant substance users: A secondary analysis
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This was supported by the National Institiute on Drug Abuse U10 DA13732 and 1 K23 DA021512.
PII: S0740-5472(09)00089-0
doi:10.1016/j.jsat.2009.05.005
© 2010 Elsevier Inc. All rights reserved.
