1. Global Initiative for Asthma: Global Strategy for Asthma Management and Prevention;National Heart, Lung, and Blood Institute,1995
2. Guidelines on the management of asthma;British Thoracic Society;Thorax,1993
3. British guidelines on asthma management: 1995 review and position statement;British Asthma Guidelines Coordinating Committee;Thorax,1997
4. Montreal Protocol on substances that deplete the ozone layer;Federal Register,1994
5. Identification of activated T lymphocytes and eosinophils in bronchial biopsies in stable atopic asthma;Azzawi;Am Rev Respir Dis,1990