Lung Function Tests: Spirometry: References

Gildea TR, McCarthy K. Pulmonary function testing. Cleveland Clinic Continuing Medical Education. http://www.clevelandclinicmeded.com/medicalpubs/diseasemanagement/pulmonary/pulmonary-function-testing/. August 2010. Accessed June 2016.

US Department of Health & Human Services. National Institutes of Health. National Heart, Lung, and Blood Institute. What are lung function tests? http://www.nhlbi.nih.gov/health/health-topics/topics/lft/. Updated September 17, 2012. Accessed June 2016.