30 April 2012 Updated at 20:29 ET
Third of asthmatics risk a fatal attack, study suggests
Michelle Roberts
Health editor,
BBC News online
Needing to use a reliever inhaler five times a day or more is one of the signs of worsening asthma
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A third of people with asthma are at a high risk of having a potentially fatal asthma attack, research suggests.
link-
http://www.bbc.co.uk/news/health-17892523