The comparison of fluticasone propionate/formoterol with fluticasone propionate/salmeterol for paediatric asthma: a meta-analysis of randomized controlled trials - Jin, Xiaofen; Wu, Lianfang; Wang, Ji; Feng, Malong (Advances in Dermatology and Allergology/Postępy Dermatologii i Alergologii, 2021)