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APA Citation
Higuchi, T., Reed, A., Oto, T., Holsworth, L., Ellis, S., Bailey, M. J., Williams, T. J., & Snell, G. I. (2006). relation of interlobar collaterals to radiological heterogeneity in severe emphysema. Thorax, 61(5), 409–413. http://access.bl.uk/ark:/81055/vdc_100135159610.0x000022