[Comparison by double-blind study of the combination of an aerosol of salbutamol and ipratropium bromide and its individual effect in chronic bronchitis and bronchial asthma]
- PMID: 6229844
[Comparison by double-blind study of the combination of an aerosol of salbutamol and ipratropium bromide and its individual effect in chronic bronchitis and bronchial asthma]
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