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APA Citation
Gibson, D., Siddiqui, M., Hurst, J., Stolz, D., Verma, M., Sharma, S., & Holmgren, U. (n.d.). p215 A systematic literature review of factors related to mortality in patients with COPD. Thorax, 77, A196. http://access.bl.uk/ark:/81055/vdc_100169538096.0x000057