1. Incidence of Achalasia in South Australia Based on Esophageal Manometry Findings 
Jaime A. Duffield, Peter W. Hamer, Richard Heddle, Richard H. Holloway, Jennifer C. Myers, Sarah K. Thompson 
Clinical Gastroenterology and Hepatology 
Volume 15, Issue 3, Pages (March 2017)
DOI: /j.cgh
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2. Figure 1
New manometric diagnoses of achalasia identified from 3 prospective South Australian adult manometry databases. DOS, distal oesophageal spasm; NSMD, non-specific motility disorder.
Clinical Gastroenterology and Hepatology  , DOI: ( /j.cgh )
Copyright © 2017 AGA Institute Terms and Conditions

3. Figure 2
The incidence of achalasia increases with age (black, definite cases; grey, likely cases; Spearman rho, 0.95; P < .01).
Clinical Gastroenterology and Hepatology  , DOI: ( /j.cgh )
Copyright © 2017 AGA Institute Terms and Conditions