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Pulmonary Disease, Chronic Obstructive
Asthma
Bronchodilator Agents
Albuterol
Adrenergic beta-Agonists
Adrenergic beta-2 Receptor Agonists
Adrenal Cortex Hormones
Anti-Asthmatic Agents
Anti-Inflammatory Agents
Ethanolamines
Scopolamine Derivatives
Adrenergic beta-2 Receptors
Treatment Outcome
Severity of Illness Index
Administration, Inhalation
Drug Therapy, Combination
Double-Blind Method
Respiratory Function Tests
Forced Expiratory Volume
Nebulizers and Vaporizers
Co-Publications
12
7
6
3
2
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