Written by: Anna Nicholson | Last reviewed: July 2015.
- American Thoracic Society / European Respiratory Society Task Force. Standards for the Diagnosis and Management of Patients with COPD [Internet]. New York: American Thoracic Society;2004 [updated 2005 September 8].
- Global Initiative for Chronic Obstructive Lung Disease. Pocket guide to COPD diagnosis, management and prevention. 2014. Available at: www.goldcopd.org [Accessed 21 November 2014.]
- Merck Manuals. “Chronic Obstructive Pulmonary Disease (Chronic Bronchitis, Emphysema).” Available at: http://www.merckmanuals.com/home/lung_and_airway_disorders/chronic_obstructive_pulmonary_disease_copd/chronic_obstructive_pulmonary_disease_chronic_bronchitis_emphysema.html [Accessed 2 February 2015.]