Updates are available Correction dated 2015-09-16

Click to view Correction: https://doi.org/10.1186/s12888-015-0600-0

Evaluating the efficacy of a web-based self-help intervention with and without chat counseling in reducing the cocaine use of problematic cocaine users: the study protocol of a pragmatic three-arm randomized controlled trial

Crossref DOI link: https://doi.org/10.1186/s12888-015-0518-6

Published Online: 2015-07-10

Published Print: 2015-12

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