Correction: Study Protocol for 'PsilOCD: A Pharmacological Challenge Study Evaluating the Effects of the 5-HT2A Agonist Psilocybin on the Neurocognitive and Clinical Correlates of Compulsivity'. - O'Connor S; Godfrey K; Reed S; Peill J; Rohani-Shukla C; Healy M; Robbins T; Frota Lisboa Pereira de Souza A; Tyacke R; Papasyrou M; Stenbæk D; Castro-Rodrigues P; et al. (2025)