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MLA Citation
Donald P. Tashkin et al.. “A multicenter, randomized, double-blind dose-ranging study of glycopyrrolate/formoterol fumarate fixed-dose combination metered dose inhaler compared to the monocomponents and open-label tiotropium dry powder inhaler in patients with moderate-to-severe COPD.” Respiratory medicine, vol. 120, 2016, pp. 16–24. http://access.bl.uk/ark:/81055/vdc_100047036237.0x000030