Effects of legal access versus illegal market cannabis on use and mental health: A randomized controlled trial. - Baltes‐Flueckiger, Lavinia; Steinauer, Regine; Meyer, Maximilian; Guessoum, Adrian; Herrmann, Oliver; Mosandl, Christoph Felix; Kronschnabel, Jens; Pichler, Eva‐Maria; Vogel, Marc; Walter, Marc (Addiction, 2025)