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. 2017 Oct 6;12:2917–2928. doi: 10.2147/COPD.S146822

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© 2017 Singh et al. This work is published and licensed by Dove Medical Press Limited

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(A) TRILOGY study design. (B) TRINITY study design.

Abbreviations: BDP, beclomethasone dipropionate; b.i.d., twice daily; FF, formoterol fumarate; GB, glycopyrronium bromide; o.d., once daily; R, randomization; V, visit; Wk, week.