Protocol for a cohort comparison treatment study evaluating the efficacy of a dimensional adaptation of GPM (GPM-extended) compared to a classic outpatient GPM treatment for patient fulfilling criteria for BPD: the EPSYLIA project. - Blay M; Benmakhlouf I; Zenou M; Amate M; Uludag-Martin A; Chevrier F; Pomey ML; Brisebarre M; Lebourleux P; Lopepe O; Cacouault J; Lagadec S; et al. (Frontiers in psychiatry, 2026)