1. NHG. NHG Standaard COPD (Derde herziening) 198 211
2. Global strategy for diagnosis, management, and prevention of COPD: the Global Initiative for Chronic Obstructive Lung Disease (GOLD) http://www.goldcopd.com
3. Global strategy for asthma management and prevention, global initiative for asthma (GINA) http://www.ginasthma.org
4. NHG. NHG-Standaard Astma bij volwassenen (Derde herziening)
5. Beta-blockers: friend or foe in asthma?;Arboe;Int J Gen Med,2013