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APA Citation
Halpin, D., Holmes, S., Calvert, J., & McInerney, D. (n.d.). m20 Finding the missing millions: case finding for COPD in people attending other long term condition clinics in primary care. Thorax, 68, A203–A204. http://access.bl.uk/ark:/81055/vdc_100135124616.0x000026