1. 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. Issue 1 (December 2015) Authors: Schaub, Michael; Maier, Larissa; Wenger, Andreas; Stark, Lars; Berg, Oliver; Beck, Thilo; Quednow, Boris; Haug, Severin Journal: BMC psychiatry Issue: Volume 15:Issue 1(2015) Page Start: 1 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗