Abbreviations
COPD=chronic obstructive pulmonary disease;
EGPA= eosinophilic granulomatosis with polyangiitis;
FEV1=forced expiratory volume;
FF=fluticasone furoate;
FF/UMEC=fluticasone furoate/umeclidinium/vilanterol;
HES=hypereosinophilis syndrome;
ICS/LABA=inhaled corticosteroid/long acting beta agonist;
RCC=refractory chronic cough