Pulmonary Function Tests - Johns Hopkins Medicine Health Library. Accessed February 3, 2013 at http://www.hopkinsmedicine.org/healthlibrary/test_procedures/pulmonary/pulmonary_function_tests_92,P07759/
Pulmonary Function Testing - Lecture notes, Northern Arizona University. Accessed February 3, 2013 at http://jan.ucc.nau.edu/daa/lecture/pft.htm
Lisa Emrich is author of the blog Brass and Ivory: Life with MS and RA and founder of the Carnival of MS Bloggers.

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