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APA Citation
Currie, D. C., Cooke, J. C., Morgan, A. D., Kerr, I. H., Delany, D., Strickland, B., & Cole, P. J. (1987). interpretation of bronchograms and chest radiographs in patients with chronic sputum production.. Thorax, 42(4), 278–284. http://access.bl.uk/ark:/81055/vdc_100137786695.0x000030