Acute psychological adverse reactions in first-time ritual ayahuasca users: a prospective case series - Gómez-Sousa, María; Jiménez-Garrido, Daniel F.; Ona, Genís; Santos, Rafael Guimarães dos; Hallak, Jaime Eduardo Cecilio; Alcázar-Córcoles, Miguel Ángel; Bouso, José Carlos (Journal of Clinical Psychopharmacology, 2021)