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APA Citation
Tomlinson, O., Markham, L., Wollerton, R., Knight, B., Duckworth, A., Spiers, A., Williams, C., Gibbons, M., & Scotton, C. (n.d.). p4 Validity and reproducibility of cardiopulmonary exercise testing in interstitial lung disease. Thorax, 74, A90. http://access.bl.uk/ark:/81055/vdc_100137791087.0x000030