Naturalistic psilocybin use is associated with persisting improvements in mental health and wellbeing: results from a prospective, longitudinal survey. - Nayak SM; Jackson H; Sepeda ND; Mathai DS; So S; Yaffe A; Zaki H; Brasher TJ; Lowe MX; Jolly DRP; Barrett FS; Griffiths RR; et al. (Frontiers in psychiatry, 2023)