Can allergy patch tests with food additives help to diagnose the cause in childhood chronic spontaneous urticaria? - Ozceker, Deniz; Dilek, Fatih; Yucel, Esra; Tamay, Zeynep; Ozkaya, Emin; Guler, Nermin (Advances in Dermatology and Allergology/Postępy Dermatologii i Alergologii, 2020)