1. Global Initiative for Asthma (GINA): Global strategy for asthma man- agement and prevention: NHLBI/WHO Workshop Report. 2002, Bethesda: National Institutes of Health, National Heart, Lung and Blood Institute
2. National Asthma Education and Prevention Program: Guidelines for the diagnosis and management of asthma: expert panel report 2. 1997, Bethesda: National Institutes of Health, National Heart, Lung and Blood Institute, 97-4051.
3. Masoli M, Fabian D, Holt S: Beasley Rather global burden of asthma: executive summary of the GINA Dissemination Committee report. Allergy. 2005, 59: 469-478. 10.1111/j.1398-9995.2004.00526.x.
4. Anderson HR, Gupta R, Strachan DP, Limb ES: "50 years of asthma: UK trends from 1955 to 2004". Thorax. 2007, 62: 85-90. 10.1136/thx.2006.066407.
5. World Health Organization Fact Sheet Fact sheet No 307: Asthma (2009). Accessed 08-05-10,
http://www.who.int/mediacentre/factsheets/fs307/en/print.html