Effectiveness of omalizumab in children and adolescents with uncontrolled allergic asthma: a case series from Poland - Sztafińska, Anna; Gwardys, Mikołaj; Podlecka, Daniela; Mospinek, Ewa; Stelmach, Iwona (Advances in Dermatology and Allergology/Postępy Dermatologii i Alergologii, 2021)