C. Rapp

Predictors of opiate agonist treatment retention among injection drug users referred from a needle exchange program.

J. Havens, C. Latkin, S. Strathdee, 2009, Journal of substance abuse treatment.

Facilitating entry into drug treatment among injection drug users referred from a needle exchange program: Results from a community-based behavioral intervention trial.

J. Havens, C. Latkin, S. Strathdee, 2006, Drug and alcohol dependence.