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World J Gastroenterol. Sep 21, 2013; 19(35): 5806-5812
Published online Sep 21, 2013. doi: 10.3748/wjg.v19.i35.5806
Figure 1
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Figure 1 Oesophageal manometry demonstrating simultaneous contractions within the oesophagus and a non-relaxing lower oesophageal sphincter.
Figure 2
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Figure 2 Barium swallow demonstrating typical “bird’s-beak” appearance of the lower oesophageal sphincter in achalasia. The oesophagus above this is dilated.
Figure 3
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Figure 3 Achalasia incidence by mid-study time points.