Vincken, W., Aumann, J., Chen, H., Henley, M., McBryan, D., & Goyal, P. (2014). Efficacy and safety of coadministration of once-daily indacaterol and glycopyrronium versus indacaterol alone in COPD patients: The GLOW6 study. Dove Medical Press.

Vincken, Walter, Joseph Aumann, Hungta Chen, Michelle Henley, Danny McBryan, and Pankaj Goyal. Efficacy and Safety of Coadministration of Once-daily Indacaterol and Glycopyrronium Versus Indacaterol Alone in COPD Patients: The GLOW6 Study. Dove Medical Press, 2014.

Vincken, Walter, et al. Efficacy and Safety of Coadministration of Once-daily Indacaterol and Glycopyrronium Versus Indacaterol Alone in COPD Patients: The GLOW6 Study. Dove Medical Press, 2014.