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APA Citation
Mishra, E., Corcoran, J., Hallifax, R., Stradling, J., Maskell, N., & Rahman, N. (n.d.). p210 Defining the minimal important difference for the visual analogue scale for dyspnoea in patients with malignant pleural effusions. Thorax, 68, A171. http://access.bl.uk/ark:/81055/vdc_100135162170.0x000027