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The bronchodilatory effect of four doses of salbutamol powder (1.6 mg) from a multi-dose dry powder inhaler, the Diskhaler, was compared to the effect of 2.5 ml salbutamol nebulizer solution (1 mg ml -1 ) from a jet nebulizer, Pari Inhalierboy, in a randomized, double-blind, double-dummy, cross-over study performed on 2 consecutive days. Thirty-two patients with severe chronic obstructive...
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