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APA Citation
Halpin, D. M., Birk, R., Brealey, N., Criner, G. J., Dransfield, M. T., Hilton, E., Lomas, D. A., Zhu, C., & Lipson, D. A. (2018). single-inhaler triple therapy in symptomatic COPD patients: FULFIL subgroup analyses. ERJ open research, 4(2), . http://access.bl.uk/ark:/81055/vdc_100171987054.0x000041