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APA Citation
Halpin, D., de Jong, H., Carter, V., Skinner, D., & Price, D. (n.d.). p59 Characteristics of established and newly treated patients with COPD according to GOLD 2017 in a UK primary care population. Thorax, 73, A132–A133. http://access.bl.uk/ark:/81055/vdc_100144722606.0x00003d