1. The Global Initiative for Asthma (GINA). Global strategy for asthma management and prevention 2009 update. Available on http://www.ginasthma.com.
2. Global Initiative for Chronic Obstructive Lung Disease. GOLD workshop report update 2008. Available on http://www.goldcopd.com.
3. Fasting: an important issue in asthma management compliance;Erkekol;Ann Allergy Asthma Immunol,2006
4. MAPI Research Institute Linguistic Validation. MAPI Research Institute. Available at: http://www.mapi-institute.com/component/content/article/6-list/132-specific-questionnaires respiratory-diseases.
5. Assessment and management of breathlessness;Altose;Chest,1985