Usefulness of sRtot and Rint in bronchodilator testing in the diagnosis of asthma in children - Bobrowska-Korzeniowska, Monika; Brzozowska, Agnieszka; Jerzyńska, Joanna; Stelmach, Wlodzimierz; Stelmach, Iwona (Advances in Dermatology and Allergology/Postępy Dermatologii i Alergologii, 2020)