1. Asthma NG. Asthma may affect as many as 334 million people2014.
2. (AAIR) CfAAIR. ASTHMA IN THE EU TOWARDS BETTER MANAGEMENT AND REGULATION OF A PUBLIC HEALTH ISSUE JØRGEN MORTENSEN &ANDREA RENDA CEPS SPECIAL REPORT2007. Available from: https://www.ceps.eu/.
3. West Sweden Asthma Study: prevalence trends over the last 18 years argues no recent increase in asthma;J Lotvall;Respiratory research,2009
4. The Urban-Rural Gradient In Asthma: A Population-Based Study in Northern Europe;S Timm;International journal of environmental research and public health,2016
5. Risk factors associated with asthma, atopic dermatitis and rhinoconjunctivitis in a rural Senegalese cohort;M Herrant;Allergy, asthma, and clinical immunology: official journal of the Canadian Society of Allergy and Clinical Immunology,2015