Structural covariance of early visual cortex is negatively associated with PTSD symptoms: A Mega-Analysis from the ENIGMA PTSD workgroup. - Harnett NG; Joshi S; Kumar P; Russell C; Dillon DG; Baker JT; Pizzagalli DA; Kaufman ML; Nickerson LN; Jahanshad N; Salminen LE; Thomopoulos SI; et al. (MedRxiv : the preprint server for health sciences, 2025)