The Borderline Symptom List-Interview: development and psychometric evaluation of an observer-based instrument for assessing symptom severity in borderline personality disorder. - Senyüz B; Vonderlin R; Claus C; Mahalingam S; Koch S; Voderholzer U; Teismann T; Kleindienst N; Böhnke JR; Lis S; Boritz T; McMain S; et al. (Borderline personality disorder and emotion dysregulation, 2025)