AUTHOR=Kamstra Annemieke C. , de Vries Sybolt O. , Brilman Maarten F. , Vasilev Petty , Alma Manna A. , van Asselt Antoinette D. I. , De Wolf Mia , Schoevers Robert A. , Jörg Frederike TITLE=Inpatient dialectical behavior therapy combined with trauma-focused therapy for PTSD and borderline personality disorder symptoms: study design of the naturalistic trauma therapy study JOURNAL=Frontiers in Psychiatry VOLUME=16 YEAR=2025 URL=https://www.frontiersin.org/journals/psychiatry/articles/10.3389/fpsyt.2025.1538267 DOI=10.3389/fpsyt.2025.1538267 ISSN=1664-0640