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APA Citation
Hartley-Sharpe, C. J., Booth, H., Johns, D. P., & Walters, E. H. (1995). differences in aerosol output and airways responsiveness between the DeVilbiss 40 and 45 hand held nebulisers.. Thorax, 50(6), 635–638. http://access.bl.uk/ark:/81055/vdc_100137792689.0x000028