Research Article

Potential limitations of a conical spacer device in severe asthma.

Br Med J (Clin Res Ed) 1984; 288 doi: https://doi.org/10.1136/bmj.288.6423.1044 (Published 07 April 1984) Cite this as: Br Med J (Clin Res Ed) 1984;288:1044

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