Different clinical phenotypes of nail abnormalities in patients with severe atopic dermatitis: a single-centre cross-sectional study - Hałubiec, Przemysław; Szepietowski, Jacek; Wojas-Pelc, Anna; Jaworek, Andrzej K. (Advances in Dermatology and Allergology/Postępy Dermatologii i Alergologii, 2026)