New variants in COL5A1 gene among Polish patients with Ehlers-Danlos syndrome – analysis of nine cases - Junkiert-Czarnecka, Anna; Pilarska-Deltow, Maria; Bąk, Aneta; Heise, Marta; Haus, Olga (Advances in Dermatology and Allergology/Postępy Dermatologii i Alergologii, 2019)