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APA Citation
George, P. J., Pearson, M. C., Edwards, D., Rudd, R. M., & Hetzel, M. R. (1990). bronchography in the assessment of patients with lung collapse for endoscopic laser therapy.. Thorax, 45(7), 503–508. http://access.bl.uk/ark:/81055/vdc_100137791724.0x000031