Figure 10 - Multiple esophageal rings.
From the following article
Endoscopic evaluation of esophageal motility disorders
Susan E. McCormick and Richard A. Kozarek
GI Motility online (2006)
doi:10.1038/gimo29
a: In a man with asthma. b: In a 24-year-old man with exercise induced asthma and allergic rhinitis.
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