Motivation and retrospective appraisal of psychedelic study participation: a qualitative study in healthy volunteers. - Ley, Laura; Liechti, Matthias E.; Becker, Anna M.; Straumann, Isabelle; Klaiber, Aaron; Holze, Friederike; Vogt, Severin B.; Arikci, Denis; Schmid, Yasmin (Psychopharmacology, 2025)