Vitamin D, cytokine profiles, and disease severity in infants with atopic dermatitis: a single centre, cross-sectional study - Barlianto, Wisnu; Wulandari, Desy; Sari, Tita; Firdayanti, Vanisia; Avandi, Muhammad (Advances in Dermatology and Allergology/Postępy Dermatologii i Alergologii, 2022)