Fig. 1From: Anti-inflammatory duration of action of fluticasone furoate/vilanterol trifenatate in asthma: a cross-over randomised controlled trialStudy schematic. SABA, short-acting beta-agonist; FF/VI, fluticasone furoate / vilanterol; FeNO, fraction of exhaled nitric oxide; PEF, peak expiratory flow, FEV1, forced expiratory volume in one secondBack to article page