1. Global Initiative for Asthma. Global strategy for asthma management and prevention. World Health Organization/National Heart, Lung, and Blood Institute workshop report. Updated 2013. Available at: http://wwwginasthmaorg/. Accessed August 10, 2015.
2. West Sweden Asthma Study: prevalence trends over the last 18 years argues no recent increase in asthma;Lotvall;Respir Res,2009
3. Obstructive lung disease in northern Sweden: respiratory symptoms assessed in a postal survey;Lundback;Eur Respir J,1991
4. Incidence of asthma in adults—report from the Obstructive Lung Disease in Northern Sweden Study;Ronmark;Allergy,1997
5. Is asthma prevalence still increasing?;Lundback;Expert Rev Respir Med,2016