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APA Citation
Wong, E. K. C., Lee, P. (. S., Ansary, S., Asha, S., Wong, K. K. H., Yee, B. J., & Ng, A. T. (2019). role of venous blood gases in hypercapnic respiratory failure chronic obstructive pulmonary disease patients presenting to the emergency department. Internal medicine journal, 49(7), 834–837. http://access.bl.uk/ark:/81055/vdc_100088139180.0x00000e