Written by: Anna Nicholson | Last reviewed: July 2015.
- Merck Manuals. “Wheezing.” Symptoms of Pulmonary Disorders. Available at: http://www.merckmanuals.com/professional/pulmonary_disorders/symptoms_of_pulmonary_disorders/wheezing.html [Accessed 28 January 2015.]
- American Thoracic Society / European Respiratory Society Task Force. Standards for the Diagnosis and Management of Patients with COPD: Guide for Patients [Internet]. New York: American Thoracic Society;2004 [updated 2005 September 8].
- Global Initiative for Chronic Obstructive Lung Disease (GOLD). Global Strategy for the Diagnosis, Management and Prevention of COPD, 2014. Available at: http://www.goldcopd.org/ [Accessed 16 January 2015.]