Psilocybin-assisted massed cognitive processing therapy for chronic posttraumatic stress disorder: Protocol for an open-label pilot feasibility trial. - Meshkat, Shakila; J. Zeifman, Richard; Stewart, Kathleen; Janssen-Aguilar, Reinhard; Lou, Wendy; Jetly, Rakesh; Monson, Candice M.; Bhat, Venkat (PLoS ONE, 2025)