Cannabis Use in Adults Who Screen Positive for Attention Deficit/Hyperactivity Disorder: CANreduce 2.0 Randomized Controlled Trial Subgroup Analysis - Joachim Ahlers; Christian Baumgartner; Mareike Augsburger; Andreas Wenger; Doris Malischnig; Nikolaos Boumparis; Thomas Berger; Lars Stark; David D Ebert; Severin Haug; Michael P Schaub (Journal of Medical Internet Research, 2022)