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2. British guidelines on asthma management, 1995 review and position statement;Thorax,1997
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4. National and international guidelines for the emergency management of adult asthma in North American emergency departments;Nowak;Ann Emerg Med,1999
5. The use of systemic beta-agonists in acute asthma in North American emergency departments [abstract];Travers;Ann Emerg Med,1999