Published on in Vol 20, No 5 (2018): May
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/9579, first published
.
![Effects of Treatment Length and Chat-Based Counseling in a Web-Based Intervention for Cannabis Users: Randomized Factorial Trial Effects of Treatment Length and Chat-Based Counseling in a Web-Based Intervention for Cannabis Users: Randomized Factorial Trial](https://asset.jmir.pub/assets/5fe7482f882bd5afd437854b83ec2f02.png 480w,https://asset.jmir.pub/assets/5fe7482f882bd5afd437854b83ec2f02.png 960w,https://asset.jmir.pub/assets/5fe7482f882bd5afd437854b83ec2f02.png 1920w,https://asset.jmir.pub/assets/5fe7482f882bd5afd437854b83ec2f02.png 2500w)
There are currently no tweets available for this article within the specified range.